High‑speed response microstepper motor, the speed is doubled compared with analog chip. The DM860 is the latest chip for driver that features of high performance, high turning moment, low noise, and strong anti-interference ability Color: black This DM860H is with Aluminum cover. Suitable for Nema 23 and Nema34 Stepper Motor (2-phase hybrid stepper motors (Outer diameter: 57,86mm). Overcurrent, overvoltage, undervoltage, short circuit protection to insure safety operation. With great workmanship, this motor driver can perfect replace the old one. Apply in dispensing machine, woodworking machine, welding machine, screw machine, winding machine, placement machine, packaging machine, engraving machine , LED, electronic equipment, etc. Material: plastic+metal, Weight: 2.3479230903 Pounds, Manufacturer: Awwertse