This item includes:
4PCS Nema 23 Stepper Motors single shaft 57BYGH627 3.0A 190N-cm(270 oz-in) 76mm
4PCS stepper motor drivers DQ542MA 4.2A 50VDC 125Microsteps
2PCS power supply 350W 36V
1PC brekout board&cable
1.Stepper motor:57BYGH627
2. DQ542MA
Adjustment of troubleshooting