CNC Stepper Motor Nema 23 Bipolar 2.8A 269oz.in/1.9Nm CNC Mill Lathe Router 1.9Nm(269oz.in) holding torque Single Shaft 6.35mm diameter NEMA 23 bipolar 2.24"x2.24"x3.0" 4-wire 1.8 deg. step angle(200 steps/rev) Rated current 2.8A & resistance 1.13ohms