General description What you get: you receive 3 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 ergonomically designed for your convenience and ease of use. This filter is essential in pneumatics, as it can be applied as a water separator for air compressors and effectively traps oil and dust, greatly reducing the disposal of worn airbrush and other pneumatic tools, thus extending their life. Technical specifications Color: transparent Interface: G1/4; 12 mm / 0.47 inch Pressure: 90 psi Material: polycarbonate housing, aluminum valve body, solid brass fittings Compatibility and accessories Standard universal male and female 1/4 inch NPT inlet and outlet Compatible with paint airbrush, air compressors, and other pneumatic tools Installation They fit most pneumatic tools for convenience, allowing easy connection to pneumatic lines and airbrushes. Usage The water