615657 Lewmar 30 mm Synchro Control Stand-Up Block Lewmar 29901320BK Features:
• Lightweight with unprecedented load bearing capability
• Ultimate efficiency and weight advantage
• Metal replacement technology
 

615645 Lewmar 40 mm Synchro Control Stand-Up Block Lewmar 29901420BK Features:
• Lightweight with unprecedented load bearing capability
• Ultimate efficiency and weight advantage
• Metal replacement technology
 

603521 Ronstan 60 mm Series 60 Core Stand-Up Block Ronstan RF64140 Core Blocks are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the  

603529 Ronstan 75 mm Series 75 Core Stand-Up Block Ronstan RF74140 Core Blocks are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the  

615270 Ronstan 30 mm Series 30 Orbit Stand-Up Block Ronstan RF35140 Ronstan Series 30 Ball Bearing - Single Stand Up Swivel
Features:
Lightweight Highest working load in its class Secure, versatile and secure attachment Low profile and compact Ultra low  

615271 Ronstan 30 mm Series 30 Orbit Stand-Up Block Ronstan RF35141 Ronstan Series 30 Ball Bearing - Single Stand Up Swivel
Features:
Lightweight Highest working load in its class Secure, versatile and secure attachment Low profile and compact Ultra low  

614282 Ronstan 20 mm Series 20 Stand-Up Block Ronstan RF20141 Features:
•Low friction
•High static and dynamic load capacity
•Lightweight
•Stainless steel ball bearings
•UV stabilished Acetal sheave
 

608863 Ronstan Series 15 Ball Bearing Utility Block Ronstan RF15141 Features:
•Ronstan Series 15 blocks utilize stainless steel cheeks and precision molded Acetal sheave running on stainless steel ball bearings
•Provides high performance  

613545 Ronstan 40 mm Series 40 Stand-Up Block Ronstan RF41140 Single, Stand-up
All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic  

609039 Harken 60 mm Aluminum Element Block Harken 6277 Features:
•Harken 60 mm Aluminum Element Block introduces sideplates that combine forged aluminum and compound curves for strength
•Sideplates are hardcoat-anodized to  

609038 Harken 80 mm Aluminum Element Standing Block Harken 6280 Features:
•Sideplates combine forged aluminum and compound curves for strength
•Sideplates are hardcoat-anodized to resist corrosion

•Design pairs minimum  

614636 Harken 29 mm Carbo Air Block Stand-Up Block Harken 349 29mm Carbo Air Block - Stand-up Fixed
Features:
•Lightweight, strong, reliable and affordable
•Safe and easy trimming
•Blocks are 30% lighter with a  

614040 Harken 40 mm Carbo Air Block Stand-Up Block Harken 2652 40mm Carbo Air Block - Stand-up Fixed
Features:
•Lights eight, strong and affordable
•Safe and easy trimming
•Blocks are 30% lighter with a  

603156 Schaefer 7 Series Stand-Up Swivel Block Schaefer 70462 Schaefer fixed base stand-up swivel blocks are designed for use with fixed position halyard, sheet or control line fairleads.
Features:
• Block swivels 360°
 

602946 Schaefer 5 Series Stand-Up Swivel Block Schaefer 50462 Schaefer fixed base stand-up swivel blocks are designed for use with fixed position halyard, sheet or control line fairleads.
Features:
• Block swivels 360°
 

602743 Schaefer 3 Series Stand-Up Swivel Block Schaefer 30362 Schaefer fixed base stand-up swivel blocks are designed for use with fixed position halyard, sheet or control line fairleads.
Features:
• Block swivels 360°
 

602971 Schaefer 5 Series Stand-Up Swivel Block Schaefer 50562 Schaefer fixed base stand-up swivel blocks are designed for use with fixed position halyard, sheet or control line fairleads.
Features:
• Block swivels 360°
 

602591 Schaefer 8 Series Stand-Up Swivel Block Schaefer 0862UC Schaefer fixed base stand-up swivel blocks are designed for use with fixed position halyard, sheet or control line fairleads.
Features:
• Block swivels 360°
 

602590 Schaefer 8 Series Stand-Up Swivel Block Schaefer 0862 Schaefer fixed base stand-up swivel blocks are designed for use with fixed position halyard, sheet or control line fairleads.
Features:
• Block swivels 360°
 

603202 Schaefer 7 Series Stand-Up Swivel Block Schaefer 70662
Schaefer fixed base stand-up swivel blocks are designed for use with fixed-position halyard, sheet or control line fairleads.
Features:
• Ball bearing sheave for a low  

602726 Schaefer 3 Series Stand-Up Swivel Block Schaefer 30062 Schaefer fixed base stand-up swivel blocks are designed for use with fixed position halyard, sheet or control line fairleads.
Features:
• Smooth ball bearing sheave