![Nema 17 stepper for ATC](http://shop.xoomspeed.com/cdn/shop/products/Nema17_Stepper_{width}x.jpg?v=1631096555)
Nema 17, 2 phase, 1.8° stepper motor, suitable for use with the ATC. The case size is 42x42x60mm which gives the good torque (0.71Nm) for a motor of this frame size.
Shaft diameter is 5mm and the shaft has a ground flat so the pulley can be mounted using a set screw.