Phillips Industries is an innovator as well as distributor of a wide variety of commercial trucking products, serving both OEMs and the aftermarket. The company is a vendor to virtually every major tractor and trailer manufacturer in the U.S., and a leader in the parts aftermarket. Product Features:For 3/8 in I.D. rubber air linesEasy to installReduces downtimeContents will make two repairsGreat addition to your Phillips CSA QWIK-FIT Kit!Includes installation instructions