A hand truck, also known as a two wheeler, stack truck, trundler, box cart, sack barrow, cart, dolly, sack truck, or bag barrow, is an L-shaped box-moving handcart with handles at one end, wheels at the base, with a small ledge to set objects on, flat against the floor when the hand-truck is upright. The objects to be moved are tilted forward, the ledge is inserted underneath them, and the objects allowed to tilt back and rest on the ledge. The truck and object are then tilted backward until the weight is balanced over the large wheels, making otherwise bulky and heavy objects easier to move. It is a first-class lever.
Another four wheel hand truck is called platform hand truck or flatbed trolley or flat deck hand truck.It is commonly used in the store or household.
Special functional hand truck including cylinder hand truck or drum hand truck which is designed for handling cylinder or gas bottle etc.