42 Stepper Motor Nema17 Shaft For 5mm Pulley RepRap CNC Prusa 3D PrinterFeatures:Shaft match with 5mm pulleysComes with 70cm 4-Lead WireHYBRID STEPPING MOTOR 42SHD0217-24BGeneral specification:Step angel: 1.8 Number of phase: 2Insulation resistance: 100M!#!amp!*!Omega; min.(500V DC)Insulation class: Class BRotor inertia: 57g.cm2Mass: 0.24kgElectrical specification:Rated voltage: 3.75VRated current: 1.5AResistence per phase: 2.5!#!amp!*!Omega; !#!amp!*!plusmn;10%Inductance per phase: 50mH !#!amp!*!plusmn;20%Holding torque: 500mN.mDetent torque: 15mN.mPackage includes:1 x Stepper motor