You mean standard tags with 4 lines of text, either stamped or embossed in?
LOADS of places do those, for about a fiver a pair. Google or eBay brings a metric f**k-ton of 'em.
http://tag-z.com/http://www.dogtagsonline.com/https://www.dogtagus.com/Dog_Tags.htmlWW2 era tags have the notch and the text is stamped in.
Vietnam era tags onward do not have the notch and the text is stamped in.
More recent tags have no notch and the text is embossed like a credit card.
I actually had a set made for eachof my dogs... yet seem to spend FAR too much time explaining to idiotic people why my dogs are wearing *dog* tags!!