Compatible Brand and Model: This water shut-off valve is specifically designed for Kärcher 2.645 - 191.0 models. It fits this model precisely, ensuring proper functioning of the equipment's water circulation system. Aesthetic Design: Generally, the connection consists of two parts: the black and the yellow part. The upper black part has a push-button structure, which is convenient to operate; the lower yellow part is made of soft material, likely for sealing and cushioning. The overall shape is compact and easy to install and store. Material Properties: The black part is made of durable engineering plastic with good pressure and wear resistance. It can withstand water flow pressure and is not easily damaged. The yellow part is likely made of rubber with good elasticity and sealing properties, effectively preventing water leakage. Function and Usability: As a water shut-off valve, its main function is to regulate the opening and closing of water flow in the Kärcher 2.645 - 191.0 equipment. When the equipment needs to be shut down, repaired, or components replaced, this coupling can be used to block water flow and prevent leakage, facilitating maintenance and use of the equipment. Easy Installation: The installation process is relatively simple. Without complicated tools, users only need to connect and secure it to the corresponding interface on the equipment. It is convenient and quick, saving installation time and effort, and ensuring that the equipment can be used quickly.