Size: The split ring is 1 inch in diameter, the chain is 1 inch in length Comes with 100 pieces metal key rings with chain and 100 pieces jump rings Material: The round key rings are made of metal alloy which make them strong and sturdy Surface finish process to ensure the color and luster, and the surface not easily rust and distortion Easy to use: Each key ring chain comes with a separate jump ring, you can attach pendant, tags and other small accessories easily