Part number: 23HS9442
Phase: 2 phase
Step angle: 1.8 degrees
Current: 4.2 A
Rated voltage: 3.78V
Resistance: 0.9 Ohm <br / 
>Phase inductance: 3.8 mH
Phase holding torque: 435 oz-in (2.8 Nm)
Brake torque: 12N.cm
Rotor inertia: 800g.cm2
Number of wires: 4
Weight: 1.7 kg
Length: 112 mm
Matching drive: DM542A
Shaft: Single shaft, front shaft length 21mm, motor shaft diameter is 8mm