Pinewood Pro Pine Derby Axles - PRO Super Speed Graphite Coated with 2 Grooves (set of 4)
Pinewood Derby PRO Super Speed Axles with Graphite-Coating are fastest axle possible! Graphite stays on axles throughout all your races, long after powdered graphite falls off other axles.
Two grooves, one on axle shaft, the other under axle head, act as graphite store and reduce friction while eliminating wobble.