Nema 17 stepper motor, holding torque 0.42 Nm, shaft diameter 5 mm
 
 
 1.8-degree, 4-driver, 2-phase 3D printer motor
 
 
 Bipolar stepper motor, 42 x 42 x 39 mm, weight 0.28 kg
 
 
 Stepper motor, 1.5 A rated current, 2.0 ohm resistance
 
 
 Silent phase of stepper motor 2 of the high-speed 3D printer