Easily identify hydrant for 'Out of service flushing.' The marker ensures there are no mix-ups and the important maintenance activity involving opening up the hydrant and allowing a high volume of water to flow through it for a certain period of time, is conducted without any confusion.
First impression, appears they will last years.
First unboxing impression: Rings are flexible & also seem durable. Chose the reflective option & it seems to be adequate. We're expecting to get many years out of them.