This bipolar stepper motor (1.7A) is very popular in CNC applications such as 3D printing. This motor can move in 1.8 degree steps. The shaft of this motor is 5 mm thick and 24 mm long. The engine also has a holding torque of up to 4.5 kg per centimeter. With a stepper motor driver such as the DRV8825 or A4988 this motor is very easy to use and can be controlled up to 1/32 or 1/16 microstepping.
Black-green and red-blue are the two coil pairs that must be connected.