Lewmar 60/40mm Fiddle Blocks

60mm (2 3/8 in.), 40mm (1 5/8 in.) sheaves run on dual Delrin ball races. Features alloy cheeks and composite sheaves. Ratchet fiddle blocks feature alloy ratchet sheaves and recessed ratchet lever. 60mm blocks fit Synchro Snap Shackle (29926040).