With the purchase of your medallion you receive this silicon fill ring a set of 3 soft foam fill rings (0.5, 1 and 2 mm). This fill rings are fabricated of clear silicon and are soft. Because they are clear they take up the colour of your medallion and/or insignia. 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.