BOSTITCH U/CAP2040ST-OL 4-Gallon Oil-Lube Stack Tank Compressor Oil-lubricated pump delivers 4.0 CFM @90 PSI and 135 PSI max operating pressure for improved tool performance 1.5 HP running motor draws only 13.5 amps for easy start up without tripping circuit breakers 4 gallon reserve tank for multiple tool use Roll cage style handle protects components from jobsite damage Cold start valve for easy start up even in cold weather conditions