Upgraded Material: Air Pressure:90psi. Brass Filter,Aluminum Alloy ,Plastic. Clear polycarbonate housing allows you to monitor amount of dirt and debris.Brass filter cartridges allow for better condensation of water vapor and oil and more efficient waste collection. With good oxidation resistance, it greatly improves the durability and reliability of the tool and extends the service life. Universal Oil Water Separator: Standard universal male and female 1/4 inch NPT inlet and outlet designs make it easy to connect pneumatic lines to pneumatic tools and airbrush to accommodate most pneumatic tools for convenience. Air Tools' Best Friend: Add this mini in-line air filter to your shop or garage to stop moisture, water, oil, and particles from entering air-spray tool and air-compressor tools. You can also add it to your compressor hose to keep the equipment working efficiently. Affordable Set: You will receive 2 Pcs Mini in-Line Air Filter with 5Pcs Spray Tool Filters. The blue end (concave) is the outlet of the airflow, and the connector side (convex) is the inlet for the airflow.Water oil separator has a convenient quick-release valve to remove anything trapped inside. 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. Greatly reduce the disposal of worn airbrush and other pneumatic tools, effectively extending the life of pneumatic tools. YXCCSE 2 Pcs Mini in-Line Air Filter Water Oil Separator for Air Line with 5 Pcs Spray Tool Filter,1/4'' NPT Inlet and Outlet Oil Water Separator Airbrush Filter Moisture Separator