2mm Black High Polish Unisex Tungsten Wedding Ring Sizes 9 to 13. This beautiful tungsten ring is 2MM in width and comfort fit. If you are looking for a ring that is scratch proof and forever keep its shine, than our Tungsten rings are for you. All of our Tungsten rings are Cobalt Free and hypoallergenic. All rings come with a 100% 30 Day Money Back Guarantee.