Made in the U.S.A.. 1/4" all steel construction. 6,000 lbs. capacity on a set of four (1,500 lb. capacity per dolly). V-Channeled so no damage to tires after long term storage. Polyurethane casters that resist flat spotting and cracking The Auto Dolly is great for personal or professional use and easily moves cars, trucks, ATV's, boats, trailers and lawn equipment. Whether you are working on your car, a classic or a project vehicle, use the Auto Dolly to help you move your vehicle with ease. You can free up storage space in your garage. The Auto Dolly is a 1/4" steel plate that is V-Channeled for a tire to sit in it. The sides are open so there is no chance of damaging sidewalls. The plate sits on four Polyurethane casters with ball bearing swivels. You put one under each wheel of the vehicle and move the vehicle with a push of your hand.