3PCS 3Nm Nema 23 Stepper Motor 4.2A 4-wires 10mm Shaft DIY CNC Mill Lathe Router Package in 3PCS 3Nm(425oz.in) holding torque NEMA 23 bipolar 2.24"x2.24"x4.45" 4-wire 1.8 deg. step angle(200 steps/rev) Rated current 4.2A & resistance 0.9ohms