What you get: you will receive 6 water oil separators, the blue end (concave) is the "outward" side of the airflow, and the connector side (convex) is the inlet for the airflow.They are easy to install and convenient to use. Widely applied:They are standard 1/4 inch NPT inlets and outlets, it easy to connect pneumatic lines to pneumatic tools and airbrush to accommodate most pneumatic tools. Sturdy material: the water oil separator is made of polycarbonate housing, aluminum valve body and solid brass fittings, it has good anti-oxidation performance, which greatly improves the durability and reliability of the tool and prolongs its service life. Extend tool life: clean air is essential in pneumatics, this filter can not only be applied as a water separator for air compressors, but also effectively trap oil and dust, so only clean air can lead to pneumatic tools; Greatly reduce the disposal of worn airbrush and other pneumatic tools, effectively extending the life of pneumatic tools. Suitable applications: the air compressor water separator is suitable for most spraying tools and air lines, such as spray paint tools, air pressure cleaners, airline dryers, airbrushes, pneumatic tools, hoses, etc., which can also be applied as a compact filter of air spray tools. Colour: blue Material: plastic Package Contents: 6 * Water oil separator filters Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.