●Application design: with electronic device for variable speed control, momentary on power tool switch type ●Easy to use: This trigger switch is on the electric hand drill, and it can be operated easily with the push of a button ●Material: Excellent lightweight and ●Function: Optional internal displacement module, optional locking type. Integrated speed control knob, for shell trigger switch ●Scope of application: GSB13RE drill, Manufacturer: TSMORY