Hybrid Stepping Motor, Nema size 08, frame size 20mm, holding torque upto 400 g.cm, CE and ROHS Technique SpecificationModel No. Rated Voltage Current /PhaseResistance /Phase Inductance /Phase Holding Tprque #Of LeadsWeightLengthSingle Shaft Double ShaftVA ΩmHOz-ing-cmKgmmSM20HT28-0204A SM20HT28-0204B4.80.2248.02.216040.0528SM20HT30-0506ASM20HT30-0506B5.750.511.51.72.518060.0630SM20HT33-0604ASM20HT33-0604B3.90.66.52.22.820040.0733SM20HT38-0604ASM20HT38-0604B100.6105.55.640040.0838