The DERBY WORX name says it all!
The Derby Worx DWXMM01 is the absolute best standard mold matched and machined wheel you can get! The ultra smooth tread looks virtually untouched but it is by far the most accurate on the market today. Each set of wheels is made using parts which came from the Official BSA® Grand Prix kit, hand selected into mold matching sets then professionally machined to perfection on a CNC lathe for maximum performance. If you are looking for that extra bit of needed speed for the pinewood derby, these wheels are a must.