One of the Cobalt Rings is 8mm Wide and the other Cobalt Wedding Ring is 6mm Wide. Both Rings are expertly Made to order in the USA. The couple's rings are crafted out of Cobalt Chrome and are pipe-cut Cobalt bands. The couple's ring set features a high shine Polish Finish that is completed by hand. Both cobalt Rings are Available in sizes 4-17 in whole, half and quarter size increments.