This Deep Throat Double Ring Gag is made of stainless steel with smooth finished edges and mirror polish.It's a strict, sexy, unique and delightful cross between a ring gag and a mouth spreader. The Steel ring gag has a diameter of 40mm. The strap fits from 15" (39cm) to 21" (53cm).Length: approx. 40-53 cmDiameter: approx. 40 mmMaterial: Stainless Steel, Genuine Leather