Master Series Lock Down Chastity CageMeasurements: Cage is approx. 3" L x 2" W Ring inner diameters: 1. 9", 2. 1", 2. 2", 2. 3" Materials: ABS Plastic, Iron, Copper Color: Black Key Features: Breathable design 4 gradually sized base rings Cage locks with either the internal metal lock or with a plastic keyholder tag Includes internal lock, 2 keys, locking pin, and 5 keyholder tags Nickel free