8mm Men's Cobalt Free Tungsten Carbide COMFORT-FIT Hammered Wedding Band Ring (Size 6 to 15) Tungsten Carbide is one of the hardest metals on earth, making Tungsten Wedding Bands quite literally scratch proof. **Does not apply for coated Tungsten Bands** Excellent choice for those who live an active lifestyle or those who appreciate their jewelry scratch free. FREE GIFT-BOX with every order All tungsten rings include free standard shipping with purchase of over $30 Manufactured using only up-to-date manufacturing techniques ensuring excellent quality and value, and as always our tungsten rings are cobalt free.