Peace of mind for pet lovers. All the information for a lost pet to be safely returned will be engraved on a stainless steel disc or dog bone tag or a brass mouse tag. Looks great dangling from a collar too. Please specify pet's name, address, and your phone number (first line, limit 10 letters and spaces; lines 2 and 3, 20 letters and spaces). Please use hyphens for phone number. Disc: 1 1/4". Dog bone: 1 1/2" long x 1" high. Mouse: 1 1/4" x 1" high.