A Deluxe Car Kit contains a pre-cut, unfinished car design, rub on decals, incremental weights, wheels and axles, cast metal custom parts, such as headers, engines, and pipes. Step-by-step illustrated instructions for assembly and finishing include complete derby race specifications. Simply sand and finish any of the six car shapes with minimum tools and supervision. Wheels and axles should be the same on all cars in a race. Official BSA wheels and axles will fit cars.