Brass 1/8" 45 Elbow. Brass Pipe and Fittings are manufactured for both commercial-industrial and residential standards. Brass has a high level of tolerance, making it ideal for oil, water, and air line applications. Brass fittings are universal, they can be used by professionals and DIY guys. This Brass 1/8" 45 Elbow is the fastest and easiest way to get your gas and or air line systems to where they need to be,