It mainly used in mechanical motion control, Like CNC milling machine, laser cutter, 3D printer, it also can used in robot platform motion control. Specification: Phase: 2 Step Angle: 1.8° Voltage: 3.15V Phase Current: 1.5A/Phase Phase Resistance: 2.1ohm/Phase Phase inductance: 1.9mH/Phase Holding Torque: 3000g.cm Lead Wire: 4 Photo inertia: 54g.cm Weight: 0.28kg Insulation Class: B