Amazon.com: Benelet Brass Pressure Washer Gun Adapter,Short Pole for Karcher K Series,K2,K3,K4,K5,K6,K7,with 1/4" Female Quick Connector,5-Pack Nozzles Spray Tips Multiple Degrees for Car Wash Foam Cannon : Patio, Lawn & Garden
Amazon.com: ZZHXSM K Series Adapter K2-K7 High Pressure Water Gun Joint Foam Pot Refit 1/4 Quick Connect Fitting for Karcher K2-K7 and Stanley SLP Pressure Washer Spray Guns : Patio, Lawn &
karcher hose adaptor for old and new quick connect hoses - YouTube