Orbit 1/2" MNPT x 1/2" Barb Riser Flex Elbow. Made of durable high-impact plastic to ensure long life. This fitting has sharp spiral barbs that eliminate the need for glue and clamps. Quickly and simply insert the fittings by hand into 1/2 inch riser flex pipe and you are done. It is used to connect 1/2" flex pipe to a sprinkler head or 1/2" female threaded pipe. It has a 1/2" barb connection for polyethylene pipe.