Swinger Black Ring Set His & Her's Matching 6mm / 8mm Black Brushed Center with Polished Edge Tungsten Carbide Wedding Band Set Please use drop down menu to choose your desired sizes. Genuine Tungsten Carbide (Cobalt Free) Wedding Band Ring Hypoallergenic - Comfort Fit This ring can be worn as a Wedding Band or Promise Ring by men or women Beware of Imitated Replicas - 30 Day Money Back Gurantee!