Features and Benefits: * Clean off work Pieces after sanding or grinding * Weighs only 2 oz.--1/4 female N.P.T. at both ends * Purge air lines of contaminants before starting tool * Connects only one time--mounts permanently * Air flow range up to 30 SCFM DynaJet In-Line Blow Gun is small, lightweight aluminum construction; mounts between coupler and air hose. Easy one-time installation.