Revell Semi Truck Racer Kit Here?s why Pinewood Derby Racer Kits stand out: Official wheels and axles included! Unlike some other kits, Racer Kits include official Pinewood Derby wheels and axles. That makes them a convenience for you, instead of something extra to buy. A better body. Racer Series bodies give you a head start on good looks. They?re CAD-drawn and preshaped to eliminate unnecessary work. Sand it smooth?and you?re ready to paint. Sandpaper and decals included. The sandpaper you need? It?s included, along with Peel & stick decal sheet 1 sheet each of 120- & 220-grit sandpaper Instruction sheet 6 each of official wheels and axles