This handy Tuning Set has what you need to get the best possible performance out of your Pinewood Derby® racer. Includes: one Wheel Truing Mandrel, one sheet each of 120-, 220- and 600-grit sandpaper, four axles, 0.5 oz. pumice powder, 0.25 oz. tube of graphite powder, instruction sheet. Age: 8+
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