Compatible for Nema 17, Nema 23 and Nema34 Stepper Motor,2-phase hybrid stepper motors(Outer diameter: 42,57,86mm). Driver 42/57 Stepper Motor has 24V-50V DC power supply, 8 level adjustable output current 1.0A-5.6A Stepper Motor apply in dispensing machine, woodworking machine, welding machine, screw machine, winding machine, placement machine, packaging machine, LED, electronic equipment, etc Compatible for drive Two-phase stepping motor dynamic voltage 20V to 50V, the maximum drive current is less than 5.6A. CNC Digital Stepper Driver DM556 Stepper Motor Controller 2-Phase Stepper Motor Driver 20-50V DC Max 5.6A 128 Subdivision, Weight: 2.05581059315 Pounds, Manufacturer: Prterver