100 PACK - This package includes 100 Tag-Z Military Dog Tag Silencers. CIRCULAR IN SHAPE - Our Tag-Z Military Dog Tag Silencers are circular in shape and stretch around a standard issued military dog tag to ensure a snug fit. Our silencers are 39mm in diameter, 5mm wide to go around the edge of the tags and 4mm thick. They fit a standard military issued tag, 2 inches long by 1.125 inches wide. SILENCE THE NOISE! - Our silencers are made to reduce the noise of the metal tag hitting the other tag. They keep your tags silent and reduce the jingle and clanking of your tags. PROTECT THE EDGES - Our silencers keep things quiet, but they also protect the edges of your tags from bumping or hitting other objects.