Transition from main line pipe or manifold to 5/8 distribution tubing or dripline in your drip system with the 5/8 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 5/8 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.