This is a single axle with a hub that mounts to our 13 inch tires. The end opposite the hub is bored to fit a 12mm shaft. It is intended to be direct driven by our IG52 motors. The hub is welded to a steel 5/8" diameter shaft.
This is a Pre Built direct drive 4WD base Programmable robot kit that uses Nexus mecanum wheels and hubs. Its a Arduino robot platform for indoor robotics. It can vector in any direction.