Safely removes frozen hub assemblies instantly Will not damage axles Universal mount fits all axle bolted hubs (5,6 and 8 lug hubs) Mounts to 2 studs using supplied flange nuts Use with 5lbs hammer to knock frozen hubs out of axles 3/4 steel backing plate and reinforced striking plate for long life Flanged nuts included (2ea) 12mm – 1.50, 14mm-1.50, 7/16-20, 1/2-20, 9/16-18, 5/8-18 .