This single strap ring gag is simple yet very effective. The soft leather strap (20mm / 3.4” wide) keeps the ring securely in place. The ring is made of steel, hand wrapped in leather and available in two sizes: medium and large. This gag is made from soft thick luxury leather, much gentler on the face than belting leather used by many manufacturers! Ring measurements: Medium – Inner diameter: 38mm (1.5”), outer diameter: 48mm (1.9”). Narrowest opening where leather wraps around ring: 31mm (1.2”) Large – Inner diameter: 43mm (1.7”), outer diameter: 52mm (2.0). Narrowest opening where leather wraps around ring: 37mm (1.5”) This gag features the option of standard or lockable buckle. Specifications: Sizing: One size fits most. Please contact us for custom sizing if you have a particularly small/large head. Enclosure: Standard or lockable buckle Thickness of leather: 2.2mm Gag Material: High quality leather