[Robust and Durable Construction]-- The car dolly set of 4 crafted from heavy-duty, 5mm thick steel plates, this set of four dollies boasts an impressive total weight capacity of 6,000 pounds (1,500 pounds per dolly). Their sturdy build makes it effortless to move vehicles within garages or storage areas, handling the task with ease and efficiency[360° Rotational High-Performance Wheels]-- The dollies are equipped with 3-inch, 360° swiveling casters that have been upgraded with ball bearings. This enhancement ensures smoother rolling and a higher loading capacity. Additionally, each dolly features two brakes to firmly secure them in place. (Note: It is recommended to assemble the lockable casters on the same side[Non-Slip Surface Design]-- The trailer dolly measuring 16 by 12 inches, the diamond-plated surface of each dolly dips in the center to provide a better grip on tires. These surfaces are not only rust-resistant but also feature a no-slip diamond pattern for added safety and stability[Simple Assembly and Operation]-- These dollies are ready to use with just the attachment of four wheels. Moving a vehicle around a garage floor is straightforward and hassle-free. They also come with handles for easy carrying or hanging when not in use, and are specifically designed to handle medium to heavy vehicles with ease[Versatile Applications]-- The car tow dolly are compatible with a wide range of vehicles, including cars, trucks, aircraft, boats, trailers, tractors, motorcycles, ATVs, and riding mowers. They are essential tools for body shops, towing companies, parking garages, showrooms, and more. Whether you're restoring, repairing, or maneuvering a vehicle, these dollies are a true lifesaver