customed option: shaft , pully, gearbox encoder ,hall sensor , brake, driver, controller 1.8 or 0.9 degree available Model No.Rated VoltageCurrent /PhaseResistance /PhaseInductance /PhaseHolding Torque# of LeadsWeightDetent TorqueLengthSingle ShaftDouble ShaftVAΩmHkg-cmkgkg-cmmmSM57HT41-1006ASM57HT41-1006B5.715.75.43.960.450.2141SM57HT41-2006ASM57HT41-2006B2.821.41.43.96SM57HT41-3006ASM57HT41- ...