This tag style is hand-forged from an upcycled piece of 1/2 inch copper pipe. Repeated cycles of annealing and hammering slowly transform a bit of plumbing into a unique piece that can adorn your pup, purse, keychain, or whatever you choose. The hammered surface has a rustic patina that will continue to deepen over time. The jumprings are hand cut out of 18 gauge copper. They are strong, but excessive pulling could cause them to open up.