Z-SPARS - MAST BASE BLOCK...
A block with a 45 mm diameter sheave will accommodate lines up to 12 mm in diameter. Includes 8mm stud with nut to fit deck castings with 8mm holes and 13mm wide slots for nuts.block with a 45 mm diameter sheave will accommodate lines up to 12 mm in diameter. Includes 8mm stud with nut to fit...