Customized Superman Military Dog Tag Necklace Customize your military dog tag necklace by clicking the 'customize now' button! This dog tag necklace comes with 1 27" stainless steel ball chain necklace and 1 clear dog tag silencer The available characters are: capital letters a  z, numbers 0  9, ! @ # $ % ^ & * ( ) _ - = + ; : ' " . , The letters are all capital letters and the text will be centered on the tag. Tag Dimensions: 2" x 1.125"