Streamline your fittings inventory with the Smart Loc™ Multidiameter Adapter. This unique adapter connects to 1/2 in. FPT and makes the transition to supply tubing or dripline of various sizes. On one end is a 1/2 in. MPT connection point; the other end features the innovative Smart Loc™ fitting which accommodates 16mm, 17mm, or 18mm tubing or dripline. Reusable fitting is made of ABS plastic treated with UV inhibitors to prevent fading and cracking.