SPIKES Tungsten Carbide Two Tier Ring. Tungsten Carbide Two Tier ring. This could be considered an ideal wedding band for your special day of matrimony. Featuring a shiny two tier accent to the polished shiny finish on the band. Tungsten Carbide men's ring available in sizes 9, 10, 11, 12, 13 and 14. Band measures 8 mm. SPIKES stainless steel jewelry is a trendsetting 316L jewelry collection created for today's stylish men and women who want leading-edge jewelry designs. SPECIFICATIONS: Tungsten Carbide, Cobalt Free, Available in sizes 9, 10, 11, 12, 13 and 14