This beautiful tungsten carbide ring is 8MM in width and comfort fit. It has a black carbon fiber inaly. If you are looking for a ring that is scratch proof and forever keep its shine, than our Tungsten Carbide rings are for you. All of our Tungsten rings are Cobalt Free and hypoallergenic. Our rings Due to the Hardness of Tungsten, these rings can be laser engraved, but not hand engraved. All ring come with a Complimentary Leather Ring Box.