Compatible with Krcher K2-K7 series high-pressure cleaners and compatible with AQT series high-pressure cleaners.Enables you to draw clean water from water source other than a tap.Can be used with compact and portable high pressure washer. 3 meters long water pipe:High-quality 3-layer cold-resistant, wear-resistant, bending-resistant, crack-resistant, and explosion-proof material. High-quality filter: with a check valve, so that water can only enter but not out, to avoid the machine without water idling, built-in self-sinking block, fine mesh filter to ensure that particulate impurities are filtered. Quick couplings and fastening strips: High-quality plastic quick couplings can be assembled in a few seconds. The fastening device is made of 304 stainless steel, which is corrosion-resistant. Easy to install: All accessories are in one package and need to be assembled by yourself. Each connector needs to be tightened to ensure good water absorption. No other tools are needed, which is convenient for you to install quickly.