Backfire Longboard Complete Speed Downhill Through 42 Deck Size: 9.5  42in wheels Durometer: 70% rebound, hardness 83A. yellow colour. Diameter:70mm Truck Material: 356-T6 aluminum alloy base plate and hanger under gravity casting heat treatment with T6 process, with quench, aging, cleaning and finishing treatment. The surface is well trimmed, grinded and painted. Grip tape: OS-800 grip tape. PVC substrate, adhesive to the board stronger, hard and sharp of silicon carbide.