I bought two dog tags for identification information to put on my two beagle pups, who are notorious for breaking free and exploring the town. They are holding up quite well, despite all the biting and chewing and fighting that happens between them. They are made from a nice sturdy metal. The engraving on them is not super deep, but it is dark and has not been worn down. They got all of the information correct. I am super pleased! Thank you!