Ratchet block carbo 57mm 5sh Harken

Harken carbo 57mm ratchet block 5sh, its the perfect lower block for the 1:10 system. All Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. The 1:10 system is most used on the F16 and F18’s, NACRA 17 and the Nacra 20Carbon.