8mm matte finished center tungsten ring(cobalt free)</br>All of tungsten rings are Cobalt Free?? scratch resistant& Comfort Fit Design</br>Classic?? Heavy and Durable</br>King Will's jewelry box?? save your giftwrap service fee?? and help you store the ring much safer and longer.</br>If you have any question?? please post it in the part of "mer Questions & Answers" below the page?? you will get the answer by us or buyers as soon as possible</br></br>Product Description</br></br><b>King Will?? not only No.1 brand of tungsten carbide ring on Amazon</b><br> King Will?? not only an excellent brand of tungsten ring on Amazon?? but also means strong will and great courage like spirit of a king?? whenever facing at any dilemma.<br> "ever know how strong you are until being strong is the only choice you have." Tungsten?? hardness is second only to diamond. Inspired by the meaning behind tungsten ring?? we create King Will.<br> " the world you maybe one person?? but to me you maybe the whole world"King Will offers various kinds of ring designs to witness wedding ceremony?? engagement moment?? and extraordinary days or things that is very important to you. Designed by delicate craft?? each of them is beautiful?? comfortable?? worth.<br><br> <b>Product Warranty</b><br> We are committed to King Will's credit worthiness and hope all the rings can keep a good condition?? so that we provide LIFE TIME WARRATY. But it normally only cover issues that were built-in to product itself?? excluding the damage result from buyers themselves.<br><br> <b>Tunsten Ring Maintenance Tips