This combination is designed for maximum protection from dirt, grime and grease. When you depend on your air tools for your income you can depend on this accessory to protect your tool. Combines a regulator, 0 - 160 PSI Gauge, 40 Micron Filter Element, 3.8 oz. polycarbonate bowl & guard, easy element replacement and automatic drain in one space saving design. This coalescing filter removes 99.97% of solids and fluids down to .3 microns and includes and automatic drain, 3.8 oz. bowl volume, and easy hands only filter element replacement. Designed for use with PNI's 50231 Air Hose Kit; this can be used with any air hose or compressor. Contains additional fittings for quick hook up. Tools and Hardware