The carabiner of our metal chastity cage for men is adjustable, adjust the snap buckle to the right position by the actual size, the adjustable range is 42-62.5mm.Color: SilverSize: 3 * 3.4 cm/1.18 * 1.34 inchRing Dia 4.2-6.3 cm/1.65-2.48 inchMaterial: Stainless SteelPackage: OPP Bag