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Harken 40mm Carbo Triple Block With Becket 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. Sheave X: 40 mm Length: 110 mm Weight: 122 g Shackle pin X: 5 mm Maximum line X: 10 mm Maximum working load: 660 kg Breaking load: 1383 kg
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