Cuff Links Blanks - 20 (10 pairs) - 10mm Glue Pads This is for 20 (10 pairs) of cuff link blanks. These silver-tone cuff links have a 10mm glue pad. The cuff links length measures 18mm long with an easy to use bullet back closure. These have a small glue pad that you can attach size 20 (1/2 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, fused glass, etc. to create beautiful one of a kind cuff links.