null Marine Double Blocks With Becket | Defender Marine
Defender Home Page
Phone: 800-628-8225 Fax: 800-654-1616 Int'l.: 860-701-3400 Email: Contact Us
Follow us on Facebook
Shipping Info
Defender Home Page
Your Cart
null
null
null View Cart View Shopping Cart
null Check My Order(s)
null Track My Package(s)
Metric/Inch
Conversion Chart
Categories
Shopping Areas
Information
Boats & Motors
null Defender Seal null
 
615577 Harken 45 mm Aluminum Element Block icon Harken 6232 Features:
• Harken Element™ Blocks introduce side plates that combine forged aluminum and compound curves for strength
•Element's design pairs the minimum amount of
49.99
608980 Harken 60 mm Aluminum Element Block icon Harken 6270 Features:
•Side plates combine forged aluminum and compound curves for strength
•Design pairs the minimum amount of metal required to protect sheave with a proven journal
115.99
604861 Harken 22 mm Micro Double Block icon Harken 227 Micro Blocks - Double with Becket
Features:
•Compact and lightweight
•Ideal for sailboards, smaller dinghies and lightly loaded control lines on boats of all sizes
30.99
614630 Harken 29 mm Carbo Air Block Double Block icon Harken 343 29mm Carbo Air Block - Double with Swivel and Becket
Features:
•Lightweight, strong, reliable and affordable
•Safe and easy trimming
•Blocks are
44.99
614037 Harken 40 mm Carbo Air Block icon Harken 2643 40mm Carbo Air Block - Double Fixed with Becket
Features:
•Lightweight, strong and affordable
•Safe and easy trimming
•Blocks are 30% lighter with a
59.99
614032 Harken 40 mm Carbo Air Block icon Harken 2639 40mm Carbo Air Block - Double with Swivel and Becket
Features:
•Lightweight, strong and affordable
•Safe and easy trimming
•Blocks are 30% lighter with a
71.99
614046 Harken 57 mm Carbo AirBlock icon Harken 2603 57mm Carbo Air Block - Double with Swivel and Becket
Features:
•Lightweight, strong and affordable
•Safe and easy trimming
•Blocks are 30% lighter with a
95.99
600042 Harken 75 mm Carbo Air Block Double Block icon Harken 2663 75mm Carbo Air Block - Double with Swivel with Becket
Features:
•Lightweight, strong and affordable
•Safe and easy trimming
•Blocks are 30% lighter with a
161.99
605065 Harken 76 mm Midrange Double Block icon Harken 1545 Midrange Blocks - Double with Becket
Features:
•Robust construction, ideal for handling high loads on medium and large offshore boats
•Fast trim and release under any
221.99
604768 Harken 38 mm Big Bullet Double Block icon Harken 128 Big Bullet Block - Double with Becket
Features:
•Compact and lightweight
•Fast trim and release under high or low loads
•Blocks adapt to almost all control
71.99
604737 Harken 29 mm Bullet Block - Double icon Harken 085 Features:
•The Harken 29 mm Double Bullet Block with Becket is compact and lightweight
•Fast trim and release under high or low loads
•Blocks adapt to almost all
43.99
615659 Lewmar 30 mm Synchro Control Double Block icon Lewmar 29901325BK Features:
• Lightweight with unprecedented load bearing capability
• Ultimate efficiency and weight advantage
• Metal replacement technology
31.34
615648 Lewmar 40 mm Synchro Control Double Block icon Lewmar 29901425BK Features:
• Lightweight with unprecedented load bearing capability
• Ultimate efficiency and weight advantage
• Metal replacement technology
50.34
615335 Lewmar 50 mm HTX Double Block icon Lewmar 29195005 Features:
•Years of design and manufacturing experience, combined with collaboration with boat builders, designers and sailors, has resulted in the Lewmar HTX Hardware Range
113.04
615605 Lewmar 50 mm Synchro Double Block icon Lewmar 29925005BK Features:
• Synchronized movement from rope to sail
• Scientifically optimized block geometry
• Revolutionary free-spin bearing and self-aligning head
35.14
615347 Lewmar 60 mm HTX Double Block icon Lewmar 29196005 Features:
•Years of design and manufacturing experience, combined with collaboration with boat builders, designers and sailors, has resulted in the Lewmar HTX Hardware Range
111.14
615615 Lewmar 60 mm Synchro Double Block icon Lewmar 29926005BK Features:
• Sychronized movement from rope to sail
• Scientifically optimized block geometry
• Revolutionary free-spin bearing and self-aligning head
46.54
615614 Lewmar 60 mm Synchro Double Block icon Lewmar 29926002BK Features:
• Sychronized movement from rope to sail
• Scientifically optimized block geometry
• Revolutionary free-spin bearing and self-aligning head
43.69
615627 Lewmar 72 mm Synchro Double Block icon Lewmar 29927205BK Features:
• Sychronized movement from rope to sail
• Scientifically optimized block geometry
• Revolutionary free-spin bearing and self-aligning head
71.24
755834 Ronstan 55 mm Series 55 Ball Bearing Orbit Double Block icon Ronstan RF55210 Ronstan Ball Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and a Dyneema® rope link head.
84.95
615274 Ronstan 30 mm Series 30 Orbit Double Block icon Ronstan RF35212 Ronstan Series 30 Ball Bearing - Double Block
Features:
Lightweight Highest working load in its class Secure, versatile and secure attachment Low profile and compact Ultra low profile
35.95
614287 Ronstan 20 mm Series 20 Double Block icon Ronstan RF20212 Features:
•Low friction
•High static and dynamic load capacity
•Lightweight
•Two way head can be fixed at 0 or 90 degrees
•Stainless steel
30.95
602508 Ronstan 50 mm Series 50 Double Block icon Ronstan RF51210 Double, Becket, Universal Swivel Head (Non-Locking)
All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races
74.95
602967 Schaefer 5 Series Double Block icon Schaefer 505-35 Schaefer 5 Series Blocks are strong, smooth and reliable. They are perfect for medium sized cruising and racing yachts and in combination with larger series blocks on bigger yachts.
132.47
603175 Schaefer 7 Series Double Block icon Schaefer 705-35 Schaefer Series 7 Blocks offer medium sized cruising and racing yachts a winning combination of strength and performance. The robust yet lightweight construction produces an exceptionally strong
169.27
603195 Schaefer 7 Series Double Block icon Schaefer 706-35 Schaefer Series 7 Blocks offer medium sized cruising and racing yachts a winning combination of strength and performance. The robust yet lightweight construction produces an exceptionally strong
154.55
602936 Schaefer 5 Series Double Block icon Schaefer 504-35 Schaefer 5 Series Blocks are strong, smooth and reliable. They are perfect for medium sized cruising and racing yachts and in combination with larger series blocks on bigger yachts.
112.23
603147 Schaefer 7 Series Double Block icon Schaefer 704-35 Schaefer Series 7 Blocks offer medium sized cruising and racing yachts a winning combination of strength and performance. The robust yet lightweight construction produces an exceptionally strong
167.43
608770 Selden 60 mm Plain Bearing Block icon Selden 406-001-06 Selden Plain Bearing Blocks are typically used for heavy and static loads in halyard tuning,mainsheet systems and boom vangs Features:
•Stainless Steel straps for increased
60.71
608817 Seldén PBB80 Plain Bearing Block icon Selden 408-001-06 Features:
•Plain bearing blocks are typically used for heavy and static loads
•Applications:
•Halyard tuning
•Mainsheet systems
160.07
null
 null Sort by Brand   null Sort By Title   Description   null Sort By Price
null
 
Harken
  • Harken 45 mm Aluminum Element Block Harken 45 mm Aluminum Element Block
    Harken 45 mm Aluminum Element Block
 
Brand:
Harken 		 
Harken 45 mm Aluminum Element Block
Harken 45 mm Aluminum Element Block
Item # : 615577

  • Type: Fiddle with Swivel
  • Maximum Working Load: 1543 LB
  • Maximum Line Size: 5/16"
    • Model Number: 6232     		  Features:
    • Harken Element™ Blocks introduce side plates that combine forged aluminum and compound curves for strength
    •Element's design pairs the minimum amount of... more...     		   
    $49.99
     
    Our Price:
    $49.99

    info

    		  
     
    Harken
    null
    • Harken 60 mm Aluminum Element Block Harken 60 mm Aluminum Element Block
      Harken 60 mm Aluminum Element Block
     
    Brand:
    Harken     		 
    Harken 60 mm Aluminum Element Block
    Harken 60 mm Aluminum Element Block
    Item # : 608980

  • Type: Double Block with Swivel and Becket
  • Maximum Working Load: 3032 lb
  • Maximum Line Size: 9/16"
    • Model Number: 6270     		  Features:
    •Side plates combine forged aluminum and compound curves for strength
    •Design pairs the minimum amount of metal required to protect sheave with a proven journal... more...     		   
    $115.99
     
    Our Price:
    $115.99

    info

    		  
     
    Harken
    • Harken 22 mm Micro Double Block Harken 22 mm Micro Double Block
      Harken 22 mm Micro Double Block
     
    Brand:
    Harken     		 
    Harken 22 mm Micro Double Block
    Harken 22 mm Micro Double Block
    Item # : 604861

  • Double Block with Becket
  • Maximum Working Load: 350 lbs
  • Maximum Line Size: 1/4"
    • Model Number: 227     		  Micro Blocks - Double with Becket
    Features:
    •Compact and lightweight
    •Ideal for sailboards, smaller dinghies and lightly loaded control lines on boats of all sizes
    ... more...     		   
    $30.99
    List Price:
    $34.85
    Our Price:
    $30.99

    info

    		  
     
    Harken
    • Harken 29 mm Carbo Air Block Double Block Harken 29 mm Carbo Air Block Double Block
      Harken 29 mm Carbo Air Block Double Block
     
    Brand:
    Harken     		 
    Harken 29 mm Carbo Air Block Double Block
    Harken 29 mm Carbo Air Block Double Block
    Item # : 614630

  • Double Block with Swivel and Becket
  • Maximum Working Load: 660 lbs
  • Maximum Line Size: 5/16"
    • Model Number: 343     		  29mm Carbo Air Block - Double with Swivel and Becket
    Features:
    •Lightweight, strong, reliable and affordable
    •Safe and easy trimming
    •Blocks are... more...     		   
    $44.99
    List Price:
    $50.55
    Our Price:
    $44.99

    info

    		  
     
    Harken
    • Harken 40 mm Carbo Air Block Harken 40 mm Carbo Air Block
      Harken 40 mm Carbo Air Block
     
    Brand:
    Harken     		 
    Harken 40 mm Carbo Air Block
    Harken 40 mm Carbo Air Block
    Item # : 614037

  • Double Block with Fixed and Becket
  • Maximum Working Load: 970 lbs
  • Maximum Line Size: 3/8"
    • Model Number: 2643     		  40mm Carbo Air Block - Double Fixed with Becket
    Features:
    •Lightweight, strong and affordable
    •Safe and easy trimming
    •Blocks are 30% lighter with a... more...     		   
    $59.99
    List Price:
    $68.50
    Our Price:
    $59.99

    info

    		  
     
    Harken
    • Harken 40 mm Carbo Air Block Harken 40 mm Carbo Air Block
      Harken 40 mm Carbo Air Block
     
    Brand:
    Harken     		 
    Harken 40 mm Carbo Air Block
    Harken 40 mm Carbo Air Block
    Item # : 614032

  • Double Block with Swivel and Becket
  • Maximum Working Load: 970 lbs
  • Maximum Line Size: 3/8"
    • Model Number: 2639     		  40mm Carbo Air Block - Double with Swivel and Becket
    Features:
    •Lightweight, strong and affordable
    •Safe and easy trimming
    •Blocks are 30% lighter with a... more...     		   
    $71.99
    List Price:
    $81.05
    Our Price:
    $71.99

    info

    		  
     
    Harken
    • Harken 57 mm Carbo AirBlock Harken 57 mm Carbo AirBlock
      Harken 57 mm Carbo AirBlock
     
    Brand:
    Harken     		 
    Harken 57 mm Carbo AirBlock
    Harken 57 mm Carbo AirBlock
    Item # : 614046

  • Double Block with Swivel and Becket
  • Safe Working Load: 1584 lbs
  • Maximum Line Size: 7/16"
    • Model Number: 2603     		  57mm Carbo Air Block - Double with Swivel and Becket
    Features:
    •Lightweight, strong and affordable
    •Safe and easy trimming
    •Blocks are 30% lighter with a... more...     		   
    $95.99
    List Price:
    $109.10
    Our Price:
    $95.99

    info

    		  
     
    Harken
    • Harken 75 mm Carbo Air Block Double Block Harken 75 mm Carbo Air Block Double Block
      Harken 75 mm Carbo Air Block Double Block
     
    Brand:
    Harken     		 
    Harken 75 mm Carbo Air Block Double Block
    Harken 75 mm Carbo Air Block Double Block
    Item # : 600042

  • Double Block with Swivel and Becket
  • Maximum Working Load: 2426 lbs
  • Maximum Line Size: 9/16"
    • Model Number: 2663     		  75mm Carbo Air Block - Double with Swivel with Becket
    Features:
    •Lightweight, strong and affordable
    •Safe and easy trimming
    •Blocks are 30% lighter with a... more...     		   
    $161.99
    List Price:
    $183.95
    Our Price:
    $161.99

    info

    		  
     
    Harken
    • Harken 76 mm Midrange Double Block Harken 76 mm Midrange Double Block
      Harken 76 mm Midrange Double Block
     
    Brand:
    Harken     		 
    Harken 76 mm Midrange Double Block
    Harken 76 mm Midrange Double Block
    Item # : 605065

  • Double Block with Becket
  • Maximum Working Load: 2800 lbs
  • Maximum Line Size: 9/16"
    • Model Number: 1545     		  Midrange Blocks - Double with Becket
    Features:
    •Robust construction, ideal for handling high loads on medium and large offshore boats
    •Fast trim and release under any... more...     		   
    $221.99
    List Price:
    $251.70
    Our Price:
    $221.99

    info

    		  
     
    Harken
    • Harken 38 mm Big Bullet Double Block Harken 38 mm Big Bullet Double Block
      Harken 38 mm Big Bullet Double Block
     
    Brand:
    Harken     		 
    Harken 38 mm Big Bullet Double Block
    Harken 38 mm Big Bullet Double Block
    Item # : 604768

  • Double Block with Becket
  • Maximum Working Load: 600 lbs
  • Maximum Line Size: 3/8"
    • Model Number: 128     		  Big Bullet Block - Double with Becket
    Features:
    •Compact and lightweight
    •Fast trim and release under high or low loads
    •Blocks adapt to almost all control... more...     		   
    $71.99
    List Price:
    $81.75
    Our Price:
    $71.99

    info

    		  
     
    Harken
    • Harken 29 mm Bullet Block - Double Harken 29 mm Bullet Block - Double
      Harken 29 mm Bullet Block - Double
     
    Brand:
    Harken     		 
    Harken 29 mm Bullet Block - Double
    Harken 29 mm Bullet Block - Double
    Item # : 604737

  • Type: Double Block with Becket
  • Maximum Working Load: 400 lbs
  • Maximum Line Size: 5/16"
    • Model Number: 085     		  Features:
    •The Harken 29 mm Double Bullet Block with Becket is compact and lightweight
    •Fast trim and release under high or low loads
    •Blocks adapt to almost all... more...     		   
    $43.99
    List Price:
    $49.90
    Our Price:
    $43.99

    info

    		  
     
    Lewmar
    • Lewmar 30 mm Synchro Control Double Block Lewmar 30 mm Synchro Control Double Block
      Lewmar 30 mm Synchro Control Double Block
     
    Brand:
    Lewmar     		  null
    Lewmar 30 mm Synchro Control Double Block
    Lewmar 30 mm Synchro Control Double Block
    Item # : 615659

  • Double Block with Becket, Color: Black
  • Safe Working Load: 660 lbs
  • Maximum Line Size 5/16"
    • Model Number: 29901325BK     		  Features:
    • Lightweight with unprecedented load bearing capability
    • Ultimate efficiency and weight advantage
    • Metal replacement technology
    ... more...     		   
    $31.34
    List Price:
    $48.06
    Reg. Price:
    $33.99
    Sale Price:
    $31.34
    info

    		  
     
    Lewmar
    • Lewmar 40 mm Synchro Control Double Block Lewmar 40 mm Synchro Control Double Block
      Lewmar 40 mm Synchro Control Double Block
     
    Brand:
    Lewmar     		  null
    Lewmar 40 mm Synchro Control Double Block
    Lewmar 40 mm Synchro Control Double Block
    Item # : 615648

  • Double Block with Becket and Locking Head, Color: Black
  • Safe Working Load: 1056 lbs
  • Maximum Line Size: 3/8"
    • Model Number: 29901425BK     		  Features:
    • Lightweight with unprecedented load bearing capability
    • Ultimate efficiency and weight advantage
    • Metal replacement technology
    ... more...     		   
    $50.34
    List Price:
    $77.97
    Reg. Price:
    $55.99
    Sale Price:
    $50.34
    info

    		  
     
    Lewmar
    • Lewmar 50 mm HTX Double Block Lewmar 50 mm HTX Double Block
      Lewmar 50 mm HTX Double Block
     
    Brand:
    Lewmar     		  null
    Lewmar 50 mm HTX Double Block
    Lewmar 50 mm HTX Double Block
    Item # : 615335

  • Double Block with Becket and Locking Swivel Head
  • Safe Working Load: 800 kg (1762 lbs approx)
  • Maximum Line Size: 10 mm (3/8" approx)
    • Model Number: 29195005     		  Features:
    •Years of design and manufacturing experience, combined with collaboration with boat builders, designers and sailors, has resulted in the Lewmar HTX Hardware Range
    ... more...     		   
    $113.04
    List Price:
    $177.04
    Reg. Price:
    $119.99
    Sale Price:
    $113.04
    info

    		  
     
    Lewmar
    • Lewmar 50 mm Synchro Double Block Lewmar 50 mm Synchro Double Block
      Lewmar 50 mm Synchro Double Block
     
    Brand:
    Lewmar     		  null
    Lewmar 50 mm Synchro Double Block
    Lewmar 50 mm Synchro Double Block
    Item # : 615605

  • Double Block with Becket and Locking Swivel Head, Color: Black
  • Safe Working Load: 990 lbs
  • Maximum Line Size: 3/8"
    • Model Number: 29925005BK     		  Features:
    • Synchronized movement from rope to sail
    • Scientifically optimized block geometry
    • Revolutionary free-spin bearing and self-aligning head
    ... more...     		   
    $35.14
    List Price:
    $53.83
    Reg. Price:
    $36.99
    Sale Price:
    $35.14
    info

    		  
     
    Lewmar
    • Lewmar 60 mm HTX Double Block Lewmar 60 mm HTX Double Block
      Lewmar 60 mm HTX Double Block
     
    Brand:
    Lewmar     		  null
    Lewmar 60 mm HTX Double Block
    Lewmar 60 mm HTX Double Block
    Item # : 615347

  • Double Block with Becket and Locking Swivel Head
  • Safe Working Load: 1100 kg (2422 lbs approx)
  • Maximum Line Size: 12 mm (1/2 ")
    • Model Number: 29196005     		  Features:
    •Years of design and manufacturing experience, combined with collaboration with boat builders, designers and sailors, has resulted in the Lewmar HTX Hardware Range
    ... more...     		   
    $111.14
    List Price:
    $174.20
    Reg. Price:
    $117.99
    Sale Price:
    $111.14
    info

    		  
     
    Lewmar
    • Lewmar 60 mm Synchro Double Block Lewmar 60 mm Synchro Double Block
      Lewmar 60 mm Synchro Double Block
     
    Brand:
    Lewmar     		  null
    Lewmar 60 mm Synchro Double Block
    Lewmar 60 mm Synchro Double Block
    Item # : 615615

  • Double Block with Becket and Locking Swivel Head, Color: Black
  • Safe Working Load: 1760 lbs
  • Maximum Line Size: 3/8", Optimal Line Size: 5/16"
    • Model Number: 29926005BK     		  Features:
    • Sychronized movement from rope to sail
    • Scientifically optimized block geometry
    • Revolutionary free-spin bearing and self-aligning head
    ... more...     		   
    $46.54
    List Price:
    $71.99
    Reg. Price:
    $48.99
    Sale Price:
    $46.54
    info

    		  
     
    Lewmar
    • Lewmar 60 mm Synchro Double Block Lewmar 60 mm Synchro Double Block
      Lewmar 60 mm Synchro Double Block
     
    Brand:
    Lewmar     		  null
    Lewmar 60 mm Synchro Double Block
    Lewmar 60 mm Synchro Double Block
    Item # : 615614

  • Double Block with Locking Swivel Head, Color: Black
  • Safe Working Load: 1760 lbs
  • Maximum Line Size: 3/8", Optimal Line Size: 5/16"
    • Model Number: 29926002BK     		  Features:
    • Sychronized movement from rope to sail
    • Scientifically optimized block geometry
    • Revolutionary free-spin bearing and self-aligning head
    ... more...     		   
    $43.69
    List Price:
    $68.40
    Reg. Price:
    $45.99
    Sale Price:
    $43.69
    info

    		  
     
    Lewmar
    • Lewmar 72 mm Synchro Double Block Lewmar 72 mm Synchro Double Block
      Lewmar 72 mm Synchro Double Block
     
    Brand:
    Lewmar     		  null
    Lewmar 72 mm Synchro Double Block
    Lewmar 72 mm Synchro Double Block
    Item # : 615627

  • Double Block with Becket and Locking Swivel Head, Color: Black
  • Safe Working Load: 2420 lbs
  • Maximum Line Size: 3/8"
    • Model Number: 29927205BK     		  Features:
    • Sychronized movement from rope to sail
    • Scientifically optimized block geometry
    • Revolutionary free-spin bearing and self-aligning head
    ... more...     		   
    $71.24
    List Price:
    $111.57
    Reg. Price:
    $74.99
    Sale Price:
    $71.24
    info

    		  
     
    Ronstan
    • Ronstan 55 mm Series 55 Ball Bearing Orbit Double Block Ronstan 55 mm Series 55 Ball Bearing Orbit Double Block
      Ronstan 55 mm Series 55 Ball Bearing Orbit Double Block
     
    Brand:
    Ronstan     		  null
    Ronstan 55 mm Series 55 Ball Bearing Orbit Double Block
    Ronstan 55 mm Series 55 Ball Bearing Orbit Double Block
    Item # : 755834

  • Type: Double Block with Becket & Swivel Head
  • Safe Working Load: 1650 lbs.
  • Maximum Line Size: 3/8"
    • Model Number: RF55210     		  Ronstan Ball Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and a Dyneema® rope link head.... more...    
    $73.59
    List Price:
    $99.94
     MAP price $84.95

    info

    		  
     
    Ronstan
    • Ronstan 30 mm Series 30 Orbit Double Block Ronstan 30 mm Series 30 Orbit Double Block
      Ronstan 30 mm Series 30 Orbit Double Block
     
    Brand:
    Ronstan     		  null
    Ronstan 30 mm Series 30 Orbit Double Block
    Ronstan 30 mm Series 30 Orbit Double Block
    Item # : 615274

  • Double Block with Becket
  • Safe Working Load: 992 lbs
  • Maximum Line Size: 5/16"
    • Model Number: RF35212     		  Ronstan Series 30 Ball Bearing - Double Block
    Features:
    Lightweight Highest working load in its class Secure, versatile and secure attachment Low profile and compact Ultra low profile... more...     		   
    $31.27
    List Price:
    $42.29
     MAP price $35.95

    info

    		  
     
    Ronstan
    • Ronstan 20 mm Series 20 Double Block Ronstan 20 mm Series 20 Double Block
      Ronstan 20 mm Series 20 Double Block
     
    Brand:
    Ronstan     		  null
    Ronstan 20 mm Series 20 Double Block
    Ronstan 20 mm Series 20 Double Block
    Item # : 614287

  • Double Block with 2-Axis Shackle Head and Becket
  • Safe Working Load: 770 lbs
  • Maximum Line Size: 1/4"
    • Model Number: RF20212     		  Features:
    •Low friction
    •High static and dynamic load capacity
    •Lightweight
    •Two way head can be fixed at 0 or 90 degrees
    •Stainless steel... more...     		   
    $26.67
    List Price:
    $36.41
     MAP price $30.95

    info

    		  
     
    Ronstan
    • Ronstan 50 mm Series 50 Double Block Ronstan 50 mm Series 50 Double Block
      Ronstan 50 mm Series 50 Double Block
     
    Brand:
    Ronstan     		  null
    Ronstan 50 mm Series 50 Double Block
    Ronstan 50 mm Series 50 Double Block
    Item # : 602508

  • Double Block with Becket and Universal Swivel Head (Non-Locking)
  • Safe Working Load: 2200 lbs
  • Maximum Line Size: 1/2"
    • Model Number: RF51210     		  Double, Becket, Universal Swivel Head (Non-Locking)
    All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races... more...     		   
    $62.55
    List Price:
    $88.18
     MAP price $74.95

    info

    		  
     
    Schaefer
    • Schaefer 5 Series Double Block Schaefer 5 Series Double Block
      Schaefer 5 Series Double Block
     
    Brand:
    Schaefer     		  null
    Schaefer 5 Series Double Block
    Schaefer 5 Series Double Block
    Item # : 602967

  • Double Block with Becket and Universal Head
  • Maximum Line Size: 7/16", Safe Working Load: 1750 lbs
  • Material: Polished Stainless Steel, Delrin Sheave
    • Model Number: 505-35     		  Schaefer 5 Series Blocks are strong, smooth and reliable. They are perfect for medium sized cruising and racing yachts and in combination with larger series blocks on bigger yachts.... more...    
    $132.47
    List Price:
    $193.55
    Reg. Price:
    $143.99
    Sale Price:
    $132.47
    info

    		  
     
    Schaefer
    • Schaefer 7 Series Double Block Schaefer 7 Series Double Block
      Schaefer 7 Series Double Block
     
    Brand:
    Schaefer     		  null
    Schaefer 7 Series Double Block
    Schaefer 7 Series Double Block
    Item # : 603175

  • Double Block with Becket, Delrin Sheaves and Universal Head
  • Maximum Line Size: 1/2", Safe Working Load: 2250 lbs.
  • Material: Stainless Steel Cheek, Three-Way Head
    • Model Number: 705-35     		  Schaefer Series 7 Blocks offer medium sized cruising and racing yachts a winning combination of strength and performance. The robust yet lightweight construction produces an exceptionally strong... more...    
    $169.27
    List Price:
    $269.90
    Reg. Price:
    $183.99
    Sale Price:
    $169.27
    info

    		  
     
    Schaefer
    • Schaefer 7 Series Double Block Schaefer 7 Series Double Block
      Schaefer 7 Series Double Block
     
    Brand:
    Schaefer     		  null
    Schaefer 7 Series Double Block
    Schaefer 7 Series Double Block
    Item # : 603195

  • Double Block with Becket, Ball Bearing Sheaves and Universal Head
  • Maximum Line Size: 9/16", Safe Working Load: 1700 lbs.
  • Material: Aluminum Cheek, Three-Way Head
    • Model Number: 706-35     		  Schaefer Series 7 Blocks offer medium sized cruising and racing yachts a winning combination of strength and performance. The robust yet lightweight construction produces an exceptionally strong... more...    
    $154.55
    List Price:
    $249.55
    Reg. Price:
    $167.99
    Sale Price:
    $154.55
    info

    		  
     
    Schaefer
    • Schaefer 5 Series Double Block Schaefer 5 Series Double Block
      Schaefer 5 Series Double Block
     
    Brand:
    Schaefer     		  null
    Schaefer 5 Series Double Block
    Schaefer 5 Series Double Block
    Item # : 602936

  • Double Block with Becket and Universal Head
  • Maximum Line Size: 7/16", Safe Working Load: 1750 lbs
  • Material: Aluminum Cheek, Delrin Sheave
    • Model Number: 504-35     		  Schaefer 5 Series Blocks are strong, smooth and reliable. They are perfect for medium sized cruising and racing yachts and in combination with larger series blocks on bigger yachts.... more...    
    $112.23
    List Price:
    $166.15
    Reg. Price:
    $121.99
    Sale Price:
    $112.23
    info

    		  
     
    Schaefer
    • Schaefer 7 Series Double Block Schaefer 7 Series Double Block
      Schaefer 7 Series Double Block
     
    Brand:
    Schaefer     		  null
    Schaefer 7 Series Double Block
    Schaefer 7 Series Double Block
    Item # : 603147

  • Double Block with Becket, Delrin Sheaves and Universal Head
  • Maximum Line Size: 1/2", Safe Working Load: 2250 lbs.
  • Material: Aluminum Cheek, Three-Way Head
    • Model Number: 704-35     		  Schaefer Series 7 Blocks offer medium sized cruising and racing yachts a winning combination of strength and performance. The robust yet lightweight construction produces an exceptionally strong... more...    
    $167.43
    List Price:
    $268.05
    Reg. Price:
    $181.99
    Sale Price:
    $167.43
    info

    		  
     
    Selden
    • Selden 60 mm Plain Bearing Block Selden 60 mm Plain Bearing Block
      Selden 60 mm Plain Bearing Block
     
    Brand:
    Selden     		  null
    Selden 60 mm Plain Bearing Block
    Selden 60 mm Plain Bearing Block
    Item # : 608770

  • Double Block with Becket, Color: Black
  • Safe Working Load: 1100 kg
  • Maximum Line Size: 14 mm
    • Model Number: 406-001-06     		  Selden Plain Bearing Blocks are typically used for heavy and static loads in halyard tuning,mainsheet systems and boom vangs Features:
    •Stainless Steel straps for increased... more...     		   
    $60.71
    List Price:
    $78.75
    Reg. Price:
    $65.99
    Sale Price:
    $60.71
    info

    		  
     
    Selden
    • Seldén PBB80 Plain Bearing Block Seldén PBB80 Plain Bearing Block
      Seldén PBB80 Plain Bearing Block
     
    Brand:
    Selden     		  null
    Seldén PBB80 Plain Bearing Block
    Seldén PBB80 Plain Bearing Block
    Item # : 608817

  • Type: Double Block with Becket
  • Safe working Load: 4400 lbs
  • Maximum Line Size: 16 mm
    • Model Number: 408-001-06     		  Features:
    •Plain bearing blocks are typically used for heavy and static loads
    •Applications:
    •Halyard tuning
    •Mainsheet systems
    ... more...     		   
    $160.07
    List Price:
    $207.00
    Reg. Price:
    $173.99
    Sale Price:
    $160.07
    info

    		  
     
     

    Free Catalog  |  Contact Us  |  Gift Certificate  |  Directions  |  Recalls  |  Site Map

    Terms Of Sale  |  Security  |  Privacy  |  Custom Rigging  |  Outfitting Desk  |  Connecticut Employment

    © Defender Industries, Inc.,  42 Great Neck Road, Waterford, CT 06385

    THE FINE PRINT: All prices subject to change without notice. Not responsible for typographical errors.
    Any and all products may be withdrawn from sale at any time. Some products featured may be limited quantity.

    This website is optimized for a 1024 x 768 screen resolution.

    Share this page
    Share