Our Military Dog Tags are made of High Quality Stainless Steel. There are blank and they are great for adding novelty pendants to jewelry offerings, wedding and party favors, personalized gifts, necklaces, key chains, zipper pulls and so on. These tags have a standard thickness ~0.8mm thick. Dog tag dimension: 2" (51mm) x 1.125" (29mm). Shiny and Matte finish are available.