This bipolar Nema 23 stepper motor with step angle 0.9deg and size 57x57x56mm. It has 4 wires, each phase draws 2.8A, with holding torque 1.26Nm (178.4oz.in). Electrical Specification Manufacturer Part Number: 23HM22-2804S Motor Type: Bipolar StepperStep Angle: 0.9 deg Holding Torque: 1.26Nm(178.4oz.in) Rat..