Other Use Punches

Now can you figure out why I would want to buy one of these punches

  about 17.00 with free shipping form china

No I really dont play guitar but I totally see a cool shape for necklaces and bracelets and earrings to punch out of  24g copper ....  (I hope )   it punches old credit cards and other plastics and they are fairly thick so I think it should punch the copper as well (not sure for how long but we will see )