1 pc Nema 23 stepper motor with 4.2A, 4 leads, 435 oz.in, key way shaft. Nema 23 stepper motor Application: Our Stepper Motors are used on small to mid-sized CNC mills or milling machines, CNC lathes, Pick-n-place machines, Laser Engravers and Laser Cutters, Vinyl Sign Cutters, CNC Plasma Cutters, and CNC Foam Cutters.