This block is useful for sorting rimfire ammunition into different groups by rim thickness or weight. It is also useful for the shooter who wants to have his ammo laid out in front of him instead of tumbling with those small boxes the ammo comes in. Made from solid black polyethylene, these blocks hold 25 rounds in each of the four sections, 100 rounds in total. The block measures 5-7/8" x 5-7/8" x 1/2".
Sinclair, Issue:5B, Page:124