The patented dog-bone shape cradles the user between the wheels, with 1-1/4in. of ground clearance. Deep, smoothly molded structural ribs allow the Bone-Ster to handle a 300-lb. capacity and provide ventilation. Molded-in handles on each side make it easy to carry. Features incredibly strong, custom-molded mag-style wheels that are guaranteed for as long as you own the creeper! 3in. dia. wheels are constructed of heavy-gauge, cad-plated steel caster frames with dual race ball bearing swivels, each one through-bolted to the body. Plus, wheels have oil-impregnated metal center bearings and molded-in-place 7/8in.-wide TPE tires that are soft enough to roll easier than rigid wheels. Dimensions: 43"L x 23-3/8"W x 4-1/2"H (assembled) U.S.A.