Cufflinks are a type of jewelry that is used to fasten the cuffs of dress shirts. They are typically made of metal and come in a variety of designs. Cufflinks can be attached to the shirt cuff by either a clip or a chain. The clip style is more popular and is easier to use. The clip is attached to the cuff by sliding it through the buttonhole and then pressing it closed. The chain style is more traditional and requires a little more effort to use. The chain is attached to the cuff by threading it through the buttonhole and then attaching it to the other end of the chain