200 steps per revolution, 1.8 degrees.Bipolar stepper, requires an H-bridge.4-wire, 12 inch leads.42mm/1.65" square body.31mm/1.22" square mounting holes, 3mm metric screws (M3). * 5mm diameter drive shaft, 24mm long, with a machined flat.12V rated voltage (you can drive it at a lower voltage, but the torque will drop) at 350mA max current.28 oz*in, 20 N*cm, 2 Kg*cm holding torque per phase.35 ohms per winding.