Measurements:Cage is approx. 3 L x 2 WRing inner diameters: 1.9, 2.1, 2.2, 2.3 Materials: ABS Plastic, Iron, Copper Color: Black Key Features: Breathable design4 gradually sized base ringsCage locks with either the internal metal lock or with a plastic keyholder tagIncludes internal lock, 2 keys, locking pin, and 5 keyholder tagsNickel-free
