These black plastic snap protectors will prevent scratching from the back side of line 24 snaps when used on holsters, sheaths and other leather goods. Simply push them into place on most line 24 (or ligne 24) snaps, others may take a light tap with your mallet, just make sure to first set the snap very firmly. We use them in the shop on the back side of the thumb break on our leather gun holsters. This allows for the plastic protector to lay against the gun, instead of the metal snap itself. Sold in Packs of 20.