Application: For almost all trucks, buses, vans or trailers with double steel wheels Description: black oxide finish for long-lasting heavy use and superior corrosion resistance. 1-1/8″ diameter with 11 Threads allows a perfect match with air impact wrench or threaded component, ensuring a secure and precise fit. one-piece pusher ensures safe and quick removal. Its ball bearing-driven design offers near-zero turning resistance, ensuring a secure grip without the pusher falling apart during use Package list: 4pcs Dual Wheel Separator Removal Tool Set .