The 1/4 in. Barb Coupling connects two sections of 1/4 in. distribution tubing (A220 and A250) or 1/4 in. DuraFlo™ JR dripline. Coupler fits inside drip tubing and anchors into place. Micro fitting 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.