This 8 mm Laser Engraved Celtic Pattern Comfort Fit style is the part of our popular Tungsten ring collection. The ring is made from jewelry grade cobalt-free Tungsten Carbide, which uses nickel binder, and the Celtic design has been laser engraved two times for maximum durability as well as visibility. This band is a flat style and has a shiny black titanium alloy finish. The dual offset grooves at the edges are polished white and provide an excellent amount of contrast to the rest of the ring. Truly Free Lifetime Sizing and Lifetime Warranty on all tungsten rings, no exchange|sizing fees.