This Locket Is really nice. It closes nice and tight not like others out there that will open easily. This also can be used for a Picture Memory Locket for a Bridal Bouquet.Magnetic closure4mm hole, 30mm locket (exterior dimensions) with approximately 25mm inner dimension.Lead and Nickel Free!Great item to create an amazing look. Charms and inserts in other listings. These are a closeout. Once they are gone they are gone!