Copper filter element: good filtration effect. Clear cup: easy to observe water mist. Advanced Plastics - Anti-Splash and Anti-Explosion. With Sew-on Purge Valve: Just press to release water in the filter. Pressure of operation: 6-10 bar. Thread: 1/4" Mainly suitable for paint spray gun and air compressor, suitable for spray guns, air tools and hoses. Mini compressed air filter - Air separator water 1/4". The best essential accessory for air compressors and pneumatic tools. It can be connected directly to the spray gun to filter dust and water in the air. Top 1/4 internal thread. Surface zinc alloy oxidation treatment, not easy to rust. Keep your air tools in high performance. It is used for establish a connection in the middle of the air tool or air line to filter moisture and impurities in the air. supply dry air for the air tool and prolong service life. Air pressure: 6 to 10 bar Air inlet and outlet: 1/4".