Add a 90° turn in your drip system with the Smart Loc™ Multidiameter Elbow, the unique fitting that accommodates multiple tubing sizes. Connect sections of 16mm, 17mm, and 18mm supply tubing or dripline together, or transition from one tubing size to another. Installation is easy—just insert the barbed end of the fitting into the tubing and twist the nut over the tubing end for a secure fit. Reusable fitting is made of ABS plastic treated with UV inhibitors to prevent fading and cracking.