With the purchase of your Goccia engraving you will receive this 0.25mm fill ring for free. This is placed between the glass and the engraving to prevent the glass from scratching on the engraving. It can of course also be used to fill up your medallion. Attention: all fill rings are meant to fill up the medallion. Pay attention that you don’t overfill the medallion. This will put pressure on the lock.