Features: 0.9step angle, holding torque 280mN.m, 4.3V rated voltage, 1.3A rated current. 0.9 pulse resolution is higher than 1.8, the processing technology is more complicated, and the accuracy is higher. Lower noise, high torque, stable property and high accuracy. Comes with 1 * 42 stepper motor and 1m wire. Motor size: 42 * 42 * 38mm (1.7 * 1.7 * 1.5in). Specifications: Color: Black Phase: 2 Step Angle: 0.95% Rated Voltage: 4.3V Rated Current: 1.3A Resistance(20): 2.2*(115%) Inductance: 5.7*(120%)mH Holding Torque: 280mN.m Rotor Inertia: 57g.cm Insulation Class: B Insulation Resistance: 200MDC 500v Ambient Temperature: 24~+80 Relative Humidity: 90%MAX Life Time: 5000 hours Item Weight: 263g / 9.3oz Package Size: 10.2 * 6.8 * 4.8cm / 4.0 * 2.7 * 1.9in Package Weight: 295g / 10.4oz Packing List: 1 * Stepper Motor 1 * Wire(1m)