Harken 57mm Carbo Ratchet Block

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.

Nylon resin sideplates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Machined aluminum sheaves are Hardkote anodized for strength and corrosion resistance. Eight facets hold line securely. Ball bearings, sheave, and sideplates are UV-stabilized with carbon black for maximum protection.

The 57 mm switchable ratchets provide precise on/off control with accessible, easy-to-operate on/off switches on both sides of the block. For the ultimate system, mount a switchable ratchet in the cockpit and a boom-mounted Ratchamatic® directly above for double holding power in heavy air and a freerunning mainsheet when it' s light. The 57 mm provides up to 10:1 holding power.

Use for:

• Main/jib/spinnaker sheets
• Mainsheet fine-tune
• Traveler controls
• Genoa leads
• Foreguy
• Vangs