Set of 3 chain-and-button closures One shank button has a chain attached, which is looped around the other button to fasten. Made of metal Button diameter: 21mm Chain length: 12cm Both ends are attached to the button shanks with jump rings, and there is also a jump ring in the middle of the chain (6cm from each end). These items have been stored at home for a long time. There is some tarnishing and minor scratches. Please consider purchasing if you understand this. Recycled materials may be used for shipping.