This is the product that started our little Company, and we have improved it here in the version that you see today. The older version was always right on the 5" width, and folks kept asking for a quarter inch more, so the new mouth is the 5.25 width. The rings are the same size as always. The ball diameter was increased just a little to accomodate the wider mouth. All of these Ring Snaffles have a copper inlaid mouth that has been highly polished, the finish is a hot blue