Compatibility: The soap dispenser is compatible with Karcher K2, K3, K4, K5, K6, and K7 machines featuring a rectangular bayonet connector. Function: Quickly and effectively coats surfaces with a thick, creamy foam. Compared to traditional car washing methods, this foamer creates a rich layer of foam that helps loosen dirt and speeds up the cleaning process, significantly reducing wash time. Using a snow foamer enhances the car washing experience and enables a professional-quality wash at home. Adjustable Spray Nozzle: Features an adjustable spray nozzle for optimal mixing and foam generation. The foam output and spray pattern can be easily adjusted to suit different cleaning needs. Wide Application: Suitable for use on cars, motorcycles, windows, floors, driveways, roofs, and siding. Ideal for both amateur and professional users seeking efficient and thorough cleaning results.