1.CE, ISO certification 2.2-phase stepper motor driver 3.manufacture,R&D, supplier's supplier 4 ... .good price with best quality 2-phase Hybrid Stepper Motor Drives ModelSubdivisions Type Output CurrentPower SupplyApproximate Demension(mm)& ... 2H130MSet by Stir Position Switch2,5,10,20,40Hybrid Max. PhaseCurrent8.0Atwo:AC17VAC(40-120)VBig130BYG250A 130BYG250B 130BYG250C cnc stepper motor driver