Foam Cannon, Car Wash Cleaning Foam Cannon for Pressure Washer with Wide Neck and 1/4" Quick Connector, Snow Foam Cannon with Adjustable Nozzle and 1 L Bottle. 【Adjustable Nozzle for Precision】Turn the top knob right (-) to get the thickest mixture; Adjust the spray nozzle to get a proper sprinkle pattern.