Upon first glance, The Sparrows UNCUFF LINK appears to be a standard pair of cuff links. However, a covert, hidden handcuff key has been engineered in to the design. This concealed hand cuff key will open almost all standard handcuffs. It’s also designed to hold your French Cuffs closed. A must have for any international spy or the average citizen looking for some styling cuff links that happen to open restraints.