Dixon PL500 Aluminum Air Fitting, In-Line Lubricator, 1" NPT, 100 SCFM, 250PSI, 16 ozs Oil Capacity Transparent sight disc allows visual inspection of oil level Installation is recommended within 25 feet of the tool to be lubricated Each time an air tool is operated, a fine mist of oil is injected into it along with the air from the compressor Designed to protect portable or stationary air tools by efficiently oiling the tool mechanisms Oil flow regulated by screwdriver screw adjustment