Red dog tags are sold in a set consisting of, 2 red tags, 1 extra long silver chain, 1 short silver chain and 2 black silencers. MARINES TYPE IN USMC AND GAS MASK SIZE (XS, S, M, L, XL, ETC.) NAVY TYPE IN USN AND USE WHICH EVER NAVY FORMAT YOU CHOOSE. AIR FORCE TYPE IN AF, IF YOU WANT IT AFTER THE SS #. The maximum is 5 lines of info. with 15 characters per line. AVAILABLE CHARACTERS ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890-@#&*( ):" ',./