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A Harken exclusive
">The 57 mm fiddle features the Cam-Lock locking system
Use cam swivel bases when leads must rotate to face the trimmer
An integral head spacer prevents Hard Lube-anodized aluminum side plates from deflecting and binding
Low-friction Carbo AirBocks® are lightweight
HARKEN 57 mm Carbo Block - Swivel, Becket, 2601 Rigging Tools_Bosun Chair A Harken exclusiveThe Harken 57mm Carbo Air Single Block with Becket includes a swivel shackle and an integral becket. Low friction Carbo AirBlocks are lightweight, strong, reliableand economical. Consistently 30% lighter and 60% stronger than equivalent Classic blocks. The sideplates 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 load control
