ALAZCO 6 Heavy-Duty 2.5" Swivel Caster Wheel for Creeper Service Cart Stool Post Mount ALAZCO premium Quality replacement wheels for mechanic's creeper, service carts, cabinets, stools & chairs 2-1/2"-diameter x 3/4" width wheel; smooth, quiet & non-marking polyurethane Heavy-duty steel axle, fender and post, rust resistant chrome finish; 360-degree Threaded-post mount, 5/16 x 5/8" with square base; flush cap, washer/lock-washer included