Quik-Draw reset valve helps boost driver productivity and satisfaction. The valve's pins reset automatically when the emergency brake is released. Quik-Draw pneumatic 3-way auto reset valve featuring integral knob Efficiently controls the release of the slider pins once parking brakes are fully engaged Ideal for use on HK & HKA van trailers and AAZ platform trailer applications Quik-Draw is the sole fully pneumatic pin release system in industry intended for slider repositioning