ProAxle axles are tempered,
rectified steel and give you
the precision needed by all
the ProAxle crowns and wheels.
The bronze (not brass!)
bushings, tailored on the
ProAxle standard 3/32"
(2.38mm) axle, get rid of the
sloppiness found in most off
the shelf kits. The M2 set
hexagonal screws keep wheels
and crowns fastened on the
axles, using the Allen wrench.