8mm Wide Laser Engraved Tungsten Rings have a unique Celtic knot in the center of the band. This ring can be worn as a Wedding Band or Promise Ring by men or women. If you are looking for a ring that is scratch resistant and forever keeps its shine, then 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. Our rings will not cause skin irritations nor turn your fingers green. Due to the Hardness of Tungsten, these rings can be laser engraved, but not hand engraved. All rings come with a 100% Money Back Guarantee .Our tungsten carbide wedding rings are lifetime guarantee. (Please specify your ring size on the comment section upon ordering.)