This big boy airplane wheel is made of a solid, dense foam for durability and light weight. It features a treaded tire and a 6-hole aluminum wheel for great scale looks. * ONE 6" diameter x 1.75" wide dense foam tire (with the words "AIRFLIGHT CUSTOM" molded in large letters) 2-piece brushed aluminum wheel hub 6 removable wheel hub screws to simulate wheel lugs 1 white Delrin axle adapter that accepts a 1/4" axle, but which can be drilled out to accomodate a larger axle * the wheel comes pre-assembled NMH 2-10-98 &