MJ Metals Jewelry Center Brushed White Tungsten 6mm Carbide Wedding Band Scratch Resistant Comfort Fit. Nickel used as a binder Cobalt Free FREE SHIPPING, Select Metals Jewelry if you are not a Prime Member---&gt; You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!