Shop No drawers, Rolyan® D-Ring™ Original, 5 X 6 Teeth, Medium Drape with Incise and Pouch, Headgear Fastening, 1.12 mm Inner Diameter / 5.0 mm Inner Flange Diameter / 2.59 mm Outer Flange Diameter / 0.63 mm Inner Flange Distance / 2.08 mm Total Length