For ultimate irrigation accuracy, rely on the Hunter RZWS Root Zone Watering System. Constructed of plastic, it is perfect for flexibility without sacrificing durability. It has a locking cap and is enclosed, which minimizes the chances of it being tampered with by a third-party. This root watering system has a pressure-compensating design, making it perfect for rugged areas, and a StrataRoot design, which delivers water to roots at all soil depths and eliminating wasteful run-off. It is pre-assembled for additional convenience. It has a check valve, protecting it from damage that would otherwise be caused by backflow. This root watering system is used for young plants and trees. It is suitable to use with 1/2-inch PVC fittings.