If you will be mounting your Mecanum Wheels on different robots or replacing the motors and need a different shaft bore size, you will want to pick up some extra hubs.
Bore is 3mm, can be drilled out to accommodate up to 1/4" shafts
Includes 6-32 setscrew
4x 4-40 tapped holes on a 3/4" bolt circle
0-FT-MECHUB-M
CAD File