57mm Harken Carbo Single Block, Swivel

The Harken 57 mm Carbo single block with swivel is a versatile high-load block for main and jib sheets on dinghies and keelboats such as the Lightning, Dragon, Soling or J/24, and for catamaran mainsheet systems. According to Harken, Carbo AirBlocks® are 60% stronger and 30% lighter than its Classic blocks.

Features

• Single block with swivel
• Cam-Lock or U-Lock: fix the shackle facing forward or sideways, or let it swivel freely
• Nylon resin sideplates with densely layered long glass fibres
• Bearings, sheave and sideplates blackened for UV protection

Specifications

• Sheave diameter: 57 mm
• Length: 110 mm
• Weight with shackle: 87 g
• Max. line diameter: 10 mm
• Shackle pin diameter: 5 mm
• Maximum working load: 360 kp
• Breaking load: 1080 kp

Applications

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