Whiteside MTL34 Mechanic's Creeper, Standard Duty, 570 lb Capacity, 36 in L x 17 in W x 4-45/64 in H, Steel, 6 Casters

A creeper is a flat metal or cushioned horizontal surface that a mechanic lays on while fixing the under carriage of a vehicle. It has wheels that sit up to 5 in. high to roll and slide easily under vehicles.