ERDIL | Black Tungsten Ring with Yellow Greek Key InlayBlack Dome Tungsten Ring with Yellow Greek Key Inlay 8MM This Ring is made of high grade tungsten carbide which provides excellent durability. Black Dome Tungsten Ring with Yellow Greek Key Inlay of the Ring. Ring Measures 8mm in width for Men. Tungsten carbide rings are extremely durable and won't scratch or fade. This Ring is made of high grade tungsten carbide which provides excellent durability. It is cobalt free which offers resistant to