57mm Harken Carbo Five-Sheave Block, Swivel

The Harken 57 mm Carbo five-sheave block with swivel has five sheaves. Harken designs the 57 mm Carbo for catamaran mainsheet systems and for main and jib sheets on dinghies and keelboats such as the Lightning, Dragon, Soling or J/24.

Features

• Five-sheave block with swivel
• Cam-Lock or U-Lock: fix the shackle facing forward or sideways, or let it swivel freely
• According to Harken 60% stronger and 30% lighter than Classic blocks
• Glass-reinforced nylon resin sideplates
• Bearings, sheaves and sideplates blackened for UV protection

Specifications

• Sheave diameter: 57 mm
• Length: 121 mm
• Weight: 428 g
• Max. line diameter: 10 mm
• Shackle pin diameter: 6 mm
• Maximum working load: 1080 kp
• Breaking load: 2270 kp

Applications

• Main and jib sheets
• Mainsheet fine tune
• Control lines, vang, cunningham
• Outhaul