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 Nema 17, Nema 23 and Nema34 Stepper Motor,2-phase hybrid stepper motors(Outer diameter: 42,57,86mm). 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: 1.9290447925 Pounds, Manufacturer: tiyao