Material: Brass and rubber gun adapter and quick connector, brass nozzle, fine workmanship. Easy connection: One end of the pressure washer gun adapter connects to a tip pressure washer nozzle or a foam cannon with a 1/4" connector. The other end is inserted into the gun and the connector turned clockwise. Updated accessory: Compatible with Karcher K2-K7 converts to 1/4" quick connect female. Durable quality: The adapter consists of a sturdy, quick-release plastic brass socket. Working pressure up to 2000 psi. Operating temperature up to 60C. 1/4" quick connector design: The 1/4" female quick connector is made of brass to prevent rust and corrosion. 1/4" snap design allows for faster application and is easy to attach and detach. Note: The data is all manually measured, please allow 1-3cm error due to differences in light and display, there may be color differences, please refer to the actual item received.