The Bone features a uniquely shaped body which cradles the user between the wheels only an inch or so above the ground. The big, easy rolling wheels are positioned outboard to provide a strong, stable working platform that cant tip or flip the user. The rib-reinforced body is being molded of a high engineering grade polypropylene copolymer that resists the effects of common solvents, oils and gasoline found in the shop. The smooth, comfortable 1-piece design has no cracks, corners or other pinch points, and the outboard wheel pods prevent tipping and flipping. The Bone body is a patented design which allows the use of large diameter wheels with specially formulated tires that roll easily over all sorts of obstacles, including rough floors, drop cords and air lines, loose parts and even tools and floor grates. The wheels are fastened to the creeper body with four 5/16 in. Dia, thru-bolts so they cant pull tear out or break off in any common use situation. The Bone is extremely low to the ground, it is a mere 1 in. off the ground when using it. The Bone has custom-molded, 5-1/8 in. Dia wheels with oil-impregnated center bearings and specially formulated molded-in-place 1 in. W tires that roll even easier. The heavy-duty cad-plated steel caster frames have dual race ADJUSTABLE ball bearing swivels and are thru-bolted to the creeper body.