Why mess with trying to attach your pet's ID tags to the D-ring of their collar or harness? Instead use the S-Biner TagLock. Made out of stainless steel, this double-gated carabiner features gates that lock into place so you don't have to worry about losing their ID tag. It makes attaching your pet's ID tags a breeze; simply attach ID Tag, clip to the D-ring on your pet's collar, lock, and you're ready to go. | Nite Ize S-Biner TagLock in Silver