Revell RMXY9613 Pwrd Wheel Truing Mandrel Set
Officially licensed by the Boy Scouts of America. Can a tool this small make a big difference in how your Pinewood Derby car performs? The answer: absolutely! It's true that each official wheel and axle set is virtually identical to every other wheel and axle set. However, that also means that every set is just a little bit different. And sometimes, that's all it takes to make a fast car the winning car! With tires, the differences are roundness and smoothness. And the rule is: the rounder and smoother the tire, the faster your car is going to be. And the easy way to make your tires as round and smooth as they can be is the Wheel Truing Mandrel Set.