crownal 8mm 6mm 4mm black tungsten wedding couple bands rings men women matte brushed finish center engraved "i love you" size 4 to 17 (6mm,8.5) crownal this beautiful tungsten rings are 2mm 4mm 6mm 8mm wide .colors options:black/silver/gun metal/rose gold. it is classic beveled edge brushed finish tungsten rings for wedding bands ,engagement rings matching rings or couple rings .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 will not cause skin irritations or turn your fingers green. due to the hardness of tungsten, these rings can be laser engraved, but not hand engraved.