High Efficiency: design enables highly power output, robust power to boosting the hammer drill ' s working efficiency and extend its usage Premium Construction: The control board features a durability aluminum alloy casing with interior, ensuring excellent heat dissipation and impacts resistance for stable under heavy loads Wide Compatibility: Compatible for Double capacitor systems and various brand hammer drills, offering broad application ranges and usability Versatile 8Pin Connector: Designed with an 8pin 8wire configuration, it supports multiple functional connection, allowing easy customization to enhances the hammer drill ' s adaptability and flexibility Built in Protections: Equipped with multiple protections mechanisms including overload and short circuit protections to ensures safe operate and minimize failure risks, Manufacturer: JSGHGDF