Revell Pinewood Derby Tuning Set/Speed Kit

Product description Officially licensed by the Boy Scouts of America. This handy Tuning Set has what you need to get the best possible performance out of your Pinewood Derby racer. The Wheel Truing Mandrel helps you make your wheels as perfectly round as they can be. And with the 600-grit sandpaper and Graphite Powder, you can polish your axles to mirror smoothness to minimize friction ? and maximize speed! Adult supervision recommended. From the Manufacturer This handy Tuning Set has everything you need to get the best possible performance out of your Pinewood Derby racer. The included Wheel Truing Mandrel improves speeds by making your tires as round and smooth as can be. INCLUDES: Wheel truing mandrel One sheet each of 120-, 220-, and 600-grit sandpaper Four axles 0.5 oz (14.1g) pumice powder 0.25 oz. (7.0g) tube of graphite powder