6mm Titanium Diamond Flat Comfort Fit Ring Sizes 8 to 13 Flat Band with Two Recessed Grooves on Either Side of the On-Center Diamond Comfort Fit Ring is 6.00 Millimeters Wide or .24 Inches in Width Lightweight, Durable, Dent and Corrosion Resistant; Impervious to Chemicals 45 Percent Lighter than Steel; Stronger than Gold, Platinum and most Metals Hypoallergenic, Commercially Pure Titanium; Life Time Sizing Warranty