Add or remove your pet's tags with ease with the Petmate Tagnabbit Quick-Release Tag Ring from Doskocil Co. Inc. You can use it for both cats and dogs. This pet tag ring is designed with two strong nickel rings connected to a swivel that prevents tags from becoming tangled. The top one easily attaches to or releases from any collar. The larger bottom ring has a quick attach and release mechanism. This enables you to swap from collar to collar when necessary. This dog tag ring is available in one size only.