40mm Carbo Single Ratchet Block with Swivel Becket & Cam CleatCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Features: Sheave A~ (mm): 40 mm; Sheave A~ (in): 1-9/16 in; Maximum line A~ (mm): 6 mm; Maximum line A~ (in): 1/4 in; Maximum working load (kg): 68 kg; Maximum working load (lb): 150 lb; - cis2:mm5mnJlm -