This 8mm black zirconium men's wedding ring, Nascar tire tread on the top, polished shiny and comfort fit inside for your extra satisfaction. Flat profile with highly-detailed tread pattern that you can see carved into the top are sure to catch the eye. This black zirconium ring is shatterproof, lightweight, nickel free and hypoallergenic, also the finger will never change the color after wearing of this wedding band.