Use the 3/4 in. MHT 700 Series Compression Adapter to transition from 3/4 in. FHT connection point to 700 Series supply tubing or dripline (0.680 in. to 0.704 in. OD). Insert tubing into the black compression ring, where an internal barb compresses into the tube to hold it in place. This compression fitting is made of ABS plastic and treated with UV inhibitors to prevent fading and cracking.