Feature:1. Foolproof Design: Our driver module is equipped with an foolproof design, which is practical and thoughtful, specifically for the security of users and related instruments.2. Convenient Wiring: The small size drive module is optoisolated, so it is very easy to wire, just follow the normal process and you can wire it successfully.3. Small Size: Our driver module uses 2.54mm (0.1in) socket and is small and light weight, very portable, you can always take this driver with you when you need it.4. Stable Performance: We enhances security in usage of this module, can withstand greater work strength, stable performance, allows for an enhanced experience in usage.5. Adaptation Type: The motor interface is designed to match the bipolar 4 wire stepper motor, which is suitable for 28, for 35, for 39, for 42, for 57 stepper motors within 2A.Specification:Item Type: Stepper Motor DriverMaterial: Aluminum alloy.Package List:1 x Stepper Motor Driver1 x 2Pin Cable1 x 4Pin Cable1 x 6Pin CableNote:Manual measurement. The specific size depends on the actual measurement.