Astro 2616 3/8" Filter/Regulator And Lubricator With Gauge Prevents costly damage to air tools caused by rust, scale and moisture Convenient minimum installation time into your compressed air system Provides clean, dry, regulated compressed air over a wide range of air flows with accurate control and fast response Gauge has rugged polycarbonate case with 2" face The lubricator adds atomized tool oil to the air stream to lubricate your pneumatic tools