This FORTRESS® Truck Bed Compressor delivers up to 24 CFM @ 90 PSI.* This professional air compressor has an ASME-compliant tank and a heavy duty cast-iron cylinder for extra-long service life. The convenient hour meter helps you plan compressor maintenance. The built-in belt tensioner offers quick, easy belt adjustments. The contractor-grade engine has low-oil shutdown. The tank is equipped with a pressure relief valve for added safety.