This item includs: 2 PCS Nema 34 Stepper Motor single shaft with 1600oz-in holding torque, 4 PCS Nema 23 Stepper Motor dual shaft with 425oz-in holding torque, 2 PCS Stepper Driver with 7.8A DQ860MA replacing MD882, 4 PCS Stepper Driver with 4.2A DQ542MAreplacing M542, 2 PCS Power Supply for 350W,48VDC, 1 PC DB25 Breakout Board & 1 Cable for free offering