GREAT COMPATIBILITY: This adapter is compatible with Karcher K2, K3, K4, K5, K6, K7 pressure washer gun. (Not suitable for K1700, K1700 CUBE, K1800, K1900, K2000) UPGRADED HIGH-QUALITY MATERIAL: This adapter is made of brass and tough plastic. These high-quality materials ensure that working pressures up to 2000psi and working temperatures up to 140 . EASY CONNECTION: One end of the pressure washer gun adapter that compatible with Karcher, which connects to nozzle or foam cannon equipped with 1/4" connection port. And the other end is inserted to gun and rotate the connector clockwise. VERSATILE USE: This adapter can connect high-pressure water tanks, water tools, and other car washing equipment with a 1/4" nozzle, turbine nozzle, or snow foam gun. It is perfect for cleaning various parts of your vehicle, including the exterior, wheels, undercarriage, and interior.