This appliance truck is constructed of lightweight, strong magnesium for a long lasting frame. It has stair roller bearing crawler treads and is padded with non-marking rubber uprights. This strong and economical appliance dolly is perfect for vending machines, washers, dryers, and furniture. The auto-rewind strap tightening system with two piece belt and clasp on this appliance hand truck makes transporting appliance machines easier. The automatic recoil is quick and secure.