HARKEN 40mm Carbo Air® Single Block with Becket, 2637 Blocks_Carbo Air Blocks raising the cleat off the

raising the cleat off the spar to improve the cleating angle and control

Low-friction Bullet blocks lead control lines aft

Carbo fiddle Ratchet blocks allow sailors to hand-hold loaded lines and offer a balance between holding power and controlled easing

The 467 and 484 use a narrow sheave for extremely small control lines and have a ferrule head for soft attachments

Other features include an adjustable back support

HARKEN 40mm Carbo Air® Single Block with Becket, 2637 Blocks_Carbo Air Blocks raising the cleat off theThe Harken 40mm Carbo Air Single Block includes an integral becket that allows either a 2: 1 or 3: 1 purchase. Low friction Carbo AirBlocks are lightweight, strong, reliableand economical. Consistently 30% lighter and 60% stronger than equivalent Classic blocks. The side plates are UV stabilized, high strength resin and designed for small diameter lines favored by racers. Good for jib and mainsheet systems on high performance dinghies, and for high