This beautiful tungsten carbide ring is 8MM in width and comfort fit. It is all high polish with beveled edges and has black carbon fiber inlay. If you are looking for a ring that is scratch proof and forever keep its shine, than our Tungsten Carbide rings are for you. Tungsten Carbide is ranked second hardest next to diamond on the Mohs scale, diamond being a 10 followed by Tungsten Carbide as 9. All of our Tungsten rings are Cobalt Free and hypoallergenic.