The Kärcher 44409390 (formerly 4.440-939.0) is a high-quality 10-meter extension hose designed to significantly increase the working radius of Kärcher K2 to K7 series domestic pressure washers. This robust hose is built to withstand pressures up to 180 bar and water temperatures up to 60 °C, ensuring reliable performance for various cleaning tasks. It features a Quick Connect system for easy and fast attachment between the pressure washer and the standard high-pressure hose, providing enhanced flexibility and convenience without sacrificing power.