The compact 29 mm Carbo is extremely strong. Use Harken's miniature Carbo as a mainsheet block on small dinghies such as the Optimist, or for low-friction control blocks on any size boat.
Doubles and triples feature U-Locks to hold the swivel in front/side position, or to let it spin freely. The triple's compact cam arm supports high-load purchases of 5:1 or 6:1. The line-shedding cheek block features a small mounting footprint and drainholes. Part # 351
Sheave: Ø 1 1/8 in 29 mm
Length: 1 3/4 in 44 mm Weight w/shackle 0.5 oz 17 g