High Torque Nema 23 CNC Stepper Motor 114mm 425oz.in/3Nm CNC Mill Lathe Router Very Huge Torque 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