Hand trucks allow one person to move large, heavy loads. Also known as dollies, hand trollies, or stack trucks, these upright wheeled carts are tilted back and rolled to move loads from one place to another. General purpose hand trucks are used to move boxes and other regularly shaped items. Convertible hand trucks can be used as an upright hand truck or as a platform truck. Folding hand trucks can be collapsed to save space while they are being stored or transported. Pail and drum hand trucks, beverage-delivery hand trucks, appliance hand trucks, cylinder hand trucks, furniture hand trucks, and bag and pallet hand trucks have features that allow them to carry specific items that would be too large, bulky, or irregularly shaped to fit on other types of hand trucks.