Choose your basic block from the list below and add your preferred brackets which will be supplied fitted to your block. The sheaves are plain bearing lubricated nylon and are profiled grooved.
Doughty's Recommended Sheave Sizes: 4mm wire rope = 100mm diameter sheave 6mm wire rope = 150mm diameter sheave 6mm wire rope = 180mm diameter sheave However ABTT stipulate diameters not less than 30x for wire rope.
