Replace the solid steel wheels on your Pro Park 8S caster kit with these rugged Polyurethane-Coated steel wheels. The Polyurethane wheels look great and make it easier to move your 4 post lift (depending on your floor) once they are attached. Also, you can keep the epoxy or paint on your garage or barn floor blemish free because the poly-coated casters won't scratch or mar your floor when moving your lift. The Polyurethane-Coated steel wheels come standard with the Pro Park 9 Plus and make a great addition to the Pro Park 8S as well.