25 Lighthouse 320198 KRS22.5 Cardboard 2x2 Self-Adhesive Holders for CENTS Fits Small Cents (22.5mm). Lighthouse holders are free of chemical softeners for optimal protection. Press both sides of the holder together and the adhesive is activated. They also have a small tab for easy insertion into pages or books. Each each order is for a box of 25 coin holders. Coins are NOT included.