For Karcher K2 K3 K4 K5 K6 K7 Pressure Washer Nozzle O Ring Seal Set 2.640-729.0 Replacement Spare Parts Accessories Vacuum Clea - Vacuum Cleaner Parts - AliExpress
Amazon.com: M MINGLE Pressure Washer Gun Adapter, to 1/4'' Quick Connect Fitting, Only Compatible Karcher K2, K3, K4, K5, K6, K7 : Patio, Lawn & Garden