• Sheave, outside diameter: 4"
• Sheave width, at hub: 5/8"
• Sheave width, at cable: 1/2"
• Rigging pins (double hole): 3/8" x 1-5/16" grip x 1-3/4" LOA

These sheaves are installed into a fixed casting. If the alignment of the wires to the quadrant are off at all, these tend wear one side or the other. Take the time to inspect your sheaves and cables to make sure there is not an alignment issue that needs to be corrected before replacing the sheaves.