The pressure washer adapter is made from Brass, which is strong and corrosion-resistant and can be used for a long for time. The working pressure is up to 3000PSI and the working temperature is up to 140 °F. use: Quickly the sprayer to the rod or nozzles. the male thread to the pressure washer and the female thread. Widely used: high pressure adapter for connecting hoses, high pressure sprayer, car water sprayer, . Attention: The rotating 14 screw connection has an inner diameter of 14mm. the washer is 15mm, this may leads to leaks.