- 3" Marine Boat Sheave Wire Pulley Brass Brushing 1/2" Rope T304 Stainless Steel - Made of Stainless Steel T304 - Brass Brushing - Sheave(A): 3'' - Rope(B): 1/2'' - Unit Weight: 9.14 Ounce - Unit Diameter: 3'' - Qty: 1 Piece