Connect two sections of supply tubing or dripline (0.704 in. to 0.710 in. OD) to form a watertight connection using the Compression Coupling 710 Series. Tubing is inserted into the compression ring, where an internal barb compresses the tube and holds it in place. This coupler is made of ABS plastic 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.