Everything you need to mount motors to all three axes of your mill/drill. You supply the motors and drive electronics and it is ready to go. Deceptively simple, these motors are not bolted solid to the machine but reside on the screw shaft instead. Units slide on in place of the handles with no modifications necessary.
Ball bearing for smooth turning. Needs NEMA23 motor, 76mm long
You need to measure the Z-axis fine feed shaft. It will be 12mm, 1/2″ or 13mm
If you want the X drive to be on the right end then it is a long hub