C & S Security's #2 Security Chain used with the handcuff cover offers the maximum in transporting security. It is the ultimate replacement for the Cast Brass Martin Link and Chain. This security link will fit any handcuff made in the U.S. or foreign, and can be used with our handcuff cover. All of the parts of our security chains are 10/18 cold rolled steel with a blu chrome finish. Swivel snap attached by 54" straight link coil chain made of 10/18 cold rolled steel with blu chrome finish to security link, 5/16 x 1 x 3 1/8, which fits through any link on the chain. This chain's security link will fit any handcuff made.