6mm Black Tungsten Diamond Wedding Ring for Him & Her Two-tone Beveled Edges Comfort fit, sizes 5 to 9 Tungsten 900 tm is our Exclusive Formulation of Tungsten Carbide Wedding Bands, and offers you Unmatched Scratch Resistance, and Quality of Finish Compared with the competition we give you both Larger AND Cleaner Diamonds True Comfort Fit and very accurate sizing, including half sizes