Mini stepper motor(20mm): Electrical Specification:ModelStep Angle(°)Motor Length(mm)Rated Current(A)Phase Resistance(Ohm)Phase Inductance(mH)Holding Torque(N.cm)Detent Torque(N.cm)Rotor Inertia(g.cm2)Lead Wire(No)Motor Weight(g)8HY24011.8260.2238.21.40.22.54408HY24021.8280.2238.21.40.22.54508HY24061.8280.63.20.91.40.22.54508HY34021.8340.2258.41.80.33.24708HY34061.8340.64.51.21.80.33.24708HY44021.8400.2328.82.60.54.54828HY44061.8400.65.81.62.60.54.5482Note:We can manufacture products according to customer's requirements.