This riser flex fitting is constructed of high-impact plastic that guarantees many years of dependable pipe fitting use. This 90-degree elbow fitting easily attaches to a 1/2-inch riser flex pipe so you can customize your yard sprinkler system by positioning or installing sprinkler system heads in hard-to-reach places. For pipe fitting sprinkler systems repair, this Orbit 37159 is a sprinkler part that you must have. Features and Benefits: Elbow shape curves at a 90-degree angle, Attaches to funny pipe without glue or clamps, Has a �-inch MNPT (Male National Pipe Thread) connection.