Karcher's EASY!Force Trigger Gun is the most ergonomic pressure washing trigger gun system available on the market. It can easily be configured to run on any pressure washer outlet or hose in the industry, both US and metric. The EASY!Force trigger gun uses the pressure of the pressure washer to operate the trigger handle reducing operator fatigue. The wand can easily be rotated a full 360 degrees allowing the operator to reach any angle while washing. The valve is designed to last longer than any other trigger on the market saving you on future trigger gun purchases! 3/8 FPT inlet, 1/4 FPT outlet.