Fai Top 15M Replacement Pressure Washer Hose, Pressure Washer Hose for Karcher K Series Pressure Washers K2 - K7One side of this high pressure hose is a professional Karcher M22 coupling that can be directly connected to the pressure washer. On the other side, there is a Karcher style bayonet click coupling (size: ID: 0. 34 inches 8. 7 mm; OD: 0. 47 inches 14 mm). You can quickly click into the trigger gun and release the hose from the trigger gun by pressing the yellow button. Please note: The pressure washer hose is only compatible with Karcher household