Material: Copper filter material, finer filter and longer life. Polymer material capacity cup, high strength heat resistance is not easy to age, good sealing, waterproof, no air leakage.High quality: The filter can effectively remove impurities and debris in the compressed air to extend the life and performance of the tool, High quality manufacturing process to ensure quality, 1/4 inch connection, with high quality brass joints, can be installed.Principle: The air filter regulator is the one that adjusts the main channel of the air pressure to a pressure value that the control device requires after decompression filtration.Use to control the pressure element and delay, overflow regulator.Effective: Maintains a stable outlet pressure regardless of the inlet pressure and flow fluctuations. If the outlet pressure is higher than the pressure defined, the pressure is free for a stable output. Number of coins delivered: 1 lucky to meet,"