1.CE, ISO certification 2.2-phase stepper motor 3.manufacture,R&D, supplier's supplier ... 4.good price with best quality 2-phase Hybrid Stepper Motors ModelType Current Drive PowerMax.Static TorqueLine ResistanceLineInductanceAppr ... . WeightMax. No-loadStart-upSpeedMatched drives (2-phase hybrid)17HS0011.8°1.7ADC24V0.15Nm1.4Ω1.96mH0.2kg390 ...