HSG Tungsten Rings for Men 8mm Engagement 18K Gold Plating Grooves Polished Wedding Main material: Tungsten Carbide . This tungsten wedding band is 8mm in width,two 18K gold plating grooves polished.The luxurious feeling of thick precious metal is combined with comfort fit style, which makes this amazing wedding ring to be worn happily. Durable, wear-resistant and permanently polished tungsten rings maintain their initial glamorous appearance. We provide ring box free, so you can save your giftware fee, and help you preserve the ring away from destruction. Lifetime Return Service.