Black Titanium 7.5mm Matte and Polished Comfort Fit Band Flat Titanium Ring with Two Precision Cut Grooves Crafted in Black Titanium Comfort Fit Ring is 7.50 Millimeters Wide or .29 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