Ronstan 55 mm Series 55 Ball Bearing Orbit Triple Block

The Ronstan 55 mm Series 55 Ball Bearing Orbit Triple Block™ with Swivel Head (RF55310) boasts the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and a Dyneema® rope link head. Their precision design allows the optimum number of ball bearings in loaded areas and eliminates them in inactive areas. Ineffective mass is reduced even further through fiber-reinforced composites in the block head, cleat arms and beckets.

Features:

• Ultra Lightweight
• Low friction 2-stage Orbital ball bearing system
• Highest working load in its class
• Low profile and compact
• High performance cleating
• Swivel shackle head for unlimited block rotation.
• Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points.
• Ultra low profile integrated beckets.

Applications:

• Mainsheet systems on dinghies, sportsboats and small keelboats to 9 m (30 ft)
• Spinnaker sheets on dinghies, sportsboats and small keel boats to 9 m (30 ft)
• Halyard, Vang and Backstay application on boats to 8 m (26 ft)
• Control line applications on larger yachts
• Mainsheet systems and spinnaker sheets on dinghies, catamarans, sportsboats and small keel boats to 9 m (30 ft)
• Halyard, vang and backstay applications on boats to 8 m (26 ft)
• Control line applications on larger yachts