Harken 40mm Carbo Fixed Double Block

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Carbo AirBlocks are 60% stronger and 30% lighter than the classic Harken block. Use the 40mm Carbo for the jib and mainsheet systems on high performance dinghies and for loaded control lines on small keelboats.

The nylon-resin sideplates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Sheaves spin on high-load ball bearings with fitted races for low-friction operation.

Ball bearings, sheave and sideplates UV stabilized with black additive for maximum protection. Best for main/jib sheets, mainsheet fine-tune, control lines, vangs, cunninghams, outhauls.

Specifications -

Sheave: 40mm

Length: 89mm

Weight with shackle: 80g

Shackle pin: 5mm

Max line: 10mm

Safe working load: 440kg

Breaking strength: 1080kg