Perfect Compatibility: The foam gun works perfectly for Karcher K2/K3/K4/K5/K6/K7 pressure washers. Automatic Foam: Mix the car wash and water, shake the foam bottle, and it will produce soft and fluffy snow foam, and spray it on the area you need to clean. Turn the top knob to adjust the foam concentration. Adjustable Nozzle: You can adjust the spray pattern from straight to fan according to the demand. Each foam gun accessory is equipped with an adjustable rust-proof foam nozzle and a strong and durable connector to control the pressure of the foam gun. Large Capacity: With a capacity of 750ML, the car wash snow foam gun is enough for 3-4 cars, trucks, SUVs, etc. And the transparent detergent container makes it easy to check the remaining foam. Wide Application: The foam soap dispenser can be used to clean vehicles, conservatories, motorcycles, bicycles, patios, shutters, driveways, walls, and caravans.