For a quick and professional cleaning and flushing of the cooling system, no solvents or aggressive chemicals are required. It operates with water pressure and compressed air, which increases cleaning efficiency. Designed for use with a water hose, it includes a connector for quick couplings of water hoses. The 5-stage nozzle has diameters of 19 mm, 29 mm, 32 mm, 36.5 mm, and 40 mm, making it suitable for most standard radiator hoses. It features a lightweight construction made from a special reinforced plastic material. The compressed air connection has a diameter of 6.3 mm (1/4") and the operating pressure is 6.3 bar.