Amazon.com: M MINGLE Foam Cannon, Replacement Parts for Karcher K2, K3, K4, K5, K6, K7 Pressure Washer, with 5 Nozzle Tips, 1/4 Inch Quick Connector : Patio, Lawn & Garden
Male Thread Adapter and 1/4" Female Fitting Foam Cannon Connector of Snow Foam Lance Pot Head Compatible with Karcher K Series K2/K3/K4/K5/K6/K7 Car High Pressure Washer Machine : Amazon.co.uk: Garden
Karcher K-Series Adapter for MJJC Foam Cannon Pro V2 – MJJC Australia Car Care
Adapter for Foam Nozzle/ Foam Cannon / Foam Generator/ High Pressure Soap Foamer for Karcher K2 K3 K4 K5 K6 K7 Pressure Washer - AliExpress
Karcher K-Series Adapter for MJJC Foam Cannon Pro V2 – MJJC Australia Car Care