The Chicago STB-21-12-PR-AB Stops and Supplies. This pair of angle stop ball valves feature 1/2" NPT female threaded inlets, 3/8" O.D. female compression outlets, and 2" tee handles. They each come with a slip wall flange, and a 3/8" O.D. by 20" bullnose flexible supply riser. These angle stops feature a bright, Chrome finish.