Moisture is very obstructed for painting and sandblasting work.Removes air moisture from the air compressor.Protects tools from moisture generated during use of air tools. Very easy to use! Just attach between the air tool and the compressor to seal out moisture.When water gets accumulated in the water separator, simply press the drain pin to release the water. Automotive repair, marine, construction, woodwork/furniture manufacturing, and all industrial clear filter balls allow visual inspection of collected moisture and are removed through a loaded valve with a spring at the bottom.Air Inlet: 1/4 inch (150 mm) (Total Length) Approx. 5.9 inches (150 mm) (Material) Aluminum Alloy + Iron + Plastic (Working Pressure) 0-140 PSI / 10 Bar; Package: 1 x Mini Air Pressure Regulator + 1 x Inline Water Trap Filter.[Caution] *Please attach directly to a spray gun or other so that air flows through the male thread side (IN) to the female screw side (OUT).Depending on the usage environment, please prepare a one-touch coupler, etc.