The soap dispenser works with Karcher K2 K3 K4 K5 K6 K7 machines that have the rectangular bayonet connector. The snow foam lance helps cover and stick the thick foam on the vehicles. Compared with the traditional way of washing cars, this foam lance produces a nice layer of thick foam on the car, helps to clean the vehicle faster and greatly reduces the washing time. Using a snow foam lance not only allows you to enjoy car washing pleasure, but also have a luxury car wash at home. Adjustable spray nozzle for mixing and foam generation. The foam sprayer is adjustable and you can adjust the amount and fan of foam as you like. The size of the soap bottle is 700ML, which is large enough for you to fully distribute on 3-4 sedans with a single filling. The car foamer can be used for washing cars, motorcycles, floors, windows, driveways, siding, etc. Ideal for amateurs or professionals.