These are holders designed to hold either 12 1 ozt. silver rounds or 1 ozt. silver bars in direct fit AirTite cases. The holders are designed to fit perfectly in a Vaultz brand pencil box, which can hold 4 holders.

The pencil box can be found at http://www.vaultz.net/pencil-boxes/pencil-box-black-w-black-skull-vaultz-vz00272.html, or your local school supply store.

The round holder works for generic rounds, Canadian Maple Leafs, and other similarly sized rounds.