Beautiful Bead 10 Pairs Cuff Links Blanks - 15mm Glue Pads Free gift: A pouch bag with random color. The silver-tone cuff links have a 15mm glue pad. 18mm Long cuff links with an easy to use bullet back closure. You can attach size 30 (3/4 inch) or larger cover buttons with flat backs to make your covered button cuff links. You can also glue on flat beads, cabochons, bottle caps, typewriter keys, glass tile, etc, to create more beautiful cuff links.