FCL Rings for Men 18K Gold Plated 4mm Tungsten Carbide Wedding Band Matte Brushed Polished Size 4-12 Material:Tungsten Carbide. 4mm Comfort Fit The inner surface is polished , so that the ring is comfortable to wear. Elegant Brushed Matte Surface, Excellent Touching Feeling 30 Days Money Back or Exchange Guarantee.We checked all the items carefully before the delivery,if you have any problem,please feel free to contact us.