40mm Carbo Single Ratchet Block with SwivelCarbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 2608, 2609, and 2614 have on/off switches. Features: Sheave A~ (mm): 40 mm; Sheave A~ (in): 1-9/16 in; Maximum line A~ (mm): 10 mm; Maximum line A~ (in): 3/8 in; Maximum working load (kg): 136 kg; Maximum working load (lb): 300 lb; - cis2:mm5mnJlm -