Nema 17 Stepper Motor 42-40 MS17HD2P420A-01 42 Motor 2.0A 2 Phase 1.8 Degree 2.74 V DC With Cable For Extruder CNC Product features Motor Model: 42-40 Nema 17, widely work for Most 3D Printer Creality Ebder 3 CR-10 CR-10s S5, Prusa i3 Monoprice selece mini, Makerbot Mendel Kossel Tevo printer etc. High torque -Holding torque up to 0.5Nm. Low loss stators have better high speed performance. Size: 42mm X 42mm X 40mm. 2 Phase 4 Wires, with 39.3 in/ 1 Meter cable. 100% brand new, ROHS and CE certified. Specifications: Model Type: MS17HD2P420A-01 Condition: 100% brand new Number of phase: 2 Step angle: 1.8 degree Rated Voltage: 2.74 V DC Rated Current: 2.0 A Holding Torque: 0.54 Nm Typ.(Two phase on/rated current) Phase Resistance: 1.37 ohm+-10%(20℃) Phase Inductance: 3.1 mH+-20%(1kHz 1V rms) Rotor Inertia: 57 g.cm2 Motor Weight: 0.28 kg Insulation Class: B(130℃) Warning: Make sure the motor connect to a constant current or chopper drive controller before...