Create a transition from your main line pipe or manifold to 1/2 distribution tubing or dripline with the 1/2 in. X 3/4 in. FPT Compression Swivel Adapter. Convenient built-in swivel enables the end of the fitting to turn when attaching or removing it to keep tubing straight and prevent kinking. The fitting threads onto a 3/4 in. MPT connection point on one end and receives 1/2 in. tubing on the other end, where an internal barb compresses the tube for a watertight fit. This compression adapter is made of acrylonitrile butadiene styrene (ABS) treated with UV inhibitors to prevent cracking.