Solid Tungsten Dog Tag with Blue Carbon Fiber Inlay with a 3mm Stainless Steel Round Box Chain Necklace. Tungsten, one of the hardest substances on the Earth signifies strength, tenacity and hardness. Tungsten does not scratch, tarnish or dent, will always look new and will NEVER need polishing. Your Dog Tag will last decades, not years. Tungsten is stronger than any other metal used for Mens Jewelry. It holds up better than gold, silver, steel or titanium to daily wear as it does not tarnish or scratch. Tungsten is also hypoallergenic, and free of both nickel and cobalt. The Dog Tag measures 1.50 inches in length and 0.75 inches in width (and the depth of the dog tag is 0.3mm). It is stamped with both the MZL and Tungsten Identification and Trademarks. The accompanied Stainless Steel Round Box Chain is a 24 inch 3mm chain. This Dog Tag is both Sophisticated and Stylish and can be worn 24/7 . This Dog Tag is delivered in a jewelry gift box. The TUNGSTEN MENS JEWELRY brand was developed by THE MZL GROUP, a leading manufacturer of mens jewelry. The owners have been in the jewelry & diamond business for over 50 years and pride themselves by always standing by their products.