HSG Tungsten Ring for Men 4mm Women Engagement Two 18K Gold Plating Grooves Polished Wedding Band Size 7-13 Main material: Tungsten Carbide . This tungsten carbide wedding band is 4mm 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 polished tungsten carbide rings maintain their initial glamorous appearance. We provide ring box free, so you can save your giftwra fee, and help you preserve the ring away from destruction. Lifetime Return Service.