Brushed Center Polished Tungsten Ring TUR17 a Brushed, Center Polished, Tungsten Ring, has a shank width of 7mm. The Center groove of the ring is high polished. This ring is a Comfort Fit, which makes it a pleasure to wear. Tungsten Carbide is a very hard, dense metal, twice as hard as steel. It always remains polished and is scratch resistant. Available from ring sizes 5 to 15. Rings are supplied in a black ring box with white pad. The ring box is supplied in a sleeve, labeled with product number and suggested retail price, for your convenience.