Like putting your vehicle on skates! One person can easily move a vehicle in any direction, freeing up precious floorspace in your shop or garage. The 12 width is perfect for a wide range of modern passenger and truck tires. Like all of our casters for the auto dolly, the standard caster contains a mar-resistant polyolefin wheel that also features a crown profile. The crown profile wheel means less rolling resistance in contact with the ground. The wheel profile also helps to pinch small debris out of the path, rather than coming to a screeching halt. The 8 auto dolly standard has a weight capacity of a whopping 1500 lbs (3000 lbs per pair, 6000 lbs per set of 4). Sold as a set of two, four needed per car.