The FPT Swivel Riser Elbow 500 Series Compression Adapter transitions a 1/2 in. riser to supply tubing or dripline (0.455 in. to 0.480 in. OD). On one end, the 1/2 in. FPT threads onto 1/2 in. MPT connection on the riser, and on the other end, tubing fits into the compression ring where an internal barb compresses the tube and holds it in place. Swivel end prevents tubing from kinking. Swivel riser elbow includes a washer which creates a watertight seal. This compression fitting is made of ABS plastic and treated with UV inhibitors to prevent fading and cracking. Use fittings to set up a new drip irrigation system, expand an existing system, or make repairs.