GREAT COMPATIBILITY: This adapter is compatible with Karcher K2, K3, K4, K5, K6, K7 pressure washer guns. (Not suitable for K1700, K1700 CUBE, K1800, K1900, K2000) UPGRADED HIGH-QUALITY MATERIAL: This adapter is made of brass and durable plastic. These high-quality materials ensure performance under working pressures up to 2000 psi and temperatures up to 140°F. EASY CONNECTION: One end of the pressure washer gun adapter is compatible with Karcher models and connects to nozzles or foam cannons with a 1/4" connection port. The other end attaches to the gun by inserting and rotating 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, turbo nozzle, or snow foam gun. It is ideal for cleaning various parts of your vehicle, including the exterior, wheels, undercarriage, and interior.