This COSCO 1,000 lb./800 lb. Capacity 2-Wheel 3-in-1 Convertible Hand Truck, 21.06 in. x 21.85 in. x 48.03 in., Aluminum has an easy one-hand conversion for 3 different uses tool free in just seconds. Use as a two wheel hand truck or convert to an assisted hand truck or four wheel hand cart for heavy-duty loads. It's perfect for transporting supplies or equipment in any commercial environment. Features include a lightweight commercial-grade aluminum frame, wheel guards that protect cargo from contacting the wheels and a center cross bar which keeps load from falling during transport. Backed by a 5 year limited warranty.