Adds two branches of 1/2 in. distribution tubing or dripline from a 3/4 in. MPT connection point; Works in a variety of areas, from small to large, flat or sloped, to join distribution tubing in your drip irrigation system 1/2 in. FPT inlet connects to sprinkler riser; outlets to sprinkler as well as two 1/2 in. tubing or driplines with outside diameters of 0.620 in. Built-in swivel makes it convenient to remove or attach adapter without twisting and potentially kinking the tubing; Filter washer inside the adapter ensures a watertight fit and screens out particles before they can clog the system Compression fitting creates a watertight seal; internal barb that compresses the inserted tubing to hold it in place; unlike a barbed fitting, the tubing is not stretched out to connect to the fitting