HARKEN 40mm Carbo Air® Single Block with Becket, 2637 Blocks_Carbo Air Blocks and 75mm Carbo Ratchamatic® is

and 75mm Carbo Ratchamatic® is adjustable for many applications and weather conditions

Low-friction Bullet blocks lead control lines aft

Other features include an adjustable back support

The 40mm cam-arm versions work in ratchet mode only

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

HARKEN 40mm Carbo Air® Single Block with Becket, 2637 Blocks_Carbo Air Blocks and 75mm Carbo Ratchamatic® isThe 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