Harken Carbo AirBlocks® are 60% stronger and 30% lighter than our Classic blocks. Use the 40 mm Carbo for 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 are UV-stabilized with carbon black for maximum protection.
Use for: Main/jib sheets, Mainsheet fine-tune, Control lines, Vangs, Cunninghams and Outhauls.
Part Number: 2657
Specifications
| Imperial | Metric | |
| Sheave Dia. | 1 9/16" | 40 mm |
| Length | 4 1/2" | 115 mm |
| Weight w/Shackle | 4.4 oz | 125 gr |
| Shackle Pin Dia. | 5/32" | 4 mm |
| Max Line Dia. | 1/4" | 6 mm |
| Maximum Working Load | 485 lbs | 220 kg |
| Breaking Load | 1620 lbs | 735 kg |
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