1 metal pulley; the round outer layer has a groove in the middle that has a leather or rubber belt in it. One side of the outer layer has an engraving that reads, "13 / 13." Each end is partially covered and has an engraving that reads, "PAT D / L / NICHOLSON." One end has the three square heads protruding out from bolts that go to the other end of the pulley. The other end has three nuts that cap the end of the bolts. Each end has a protruding circle in its centre with an opening that is hollow through to the opposing side.