Use with air compressor to power al types of pheumatic tools including – staple guns, brad nailers, spray guns, air ratchets. Weather, oil, and solvent resistant outer EPDM rubber coating. Can be used for both air and water applications. 1/4″ solid brass NPT fittings. Maximum operating pressure: 250 PSI, 4 to 1 safety burst ratio. Temperature range: -40°F to 190°F.