Our Pet Studio™ Key Rings put a whimsical spin on a practical necessity. Adorable designs will delight any pet-lover. Made of a heavyweight, metal alloy with a brushed finish. Dog Bone, Pawprint have wire rings, Leather Bone has a split ring, and Cat’s Paw with Fish has a cable loop. 1/8" thick wire cable. 2" diameter ring clasp unscrews.