Open Mouth Gag With Removable Metal O RingStrong Leather Straps adjustable buckle Removable RingRing Inner Diameter; 40mmRing Outer Diameter; 50mm Hells Couture Leather is guaranteed to be quality genuine leather which is handcrafted to make these wonderful items for you. When you are after the best that money can buy at a realistic price always choose Hells Couture.