This 20 compartment storage box has 2 sections with a plastic clasp on one end and a hinge in the middle. The contents of each compartment are visible through its translucent top (when open) or its bottom (when closed). Suitable for storing hooks, shanks, beads and eyes. The compartments each measure 1-1/2 inches long x 1-1/8 inches wide x 5/8 inch deep. The overall size of the box when closed is 6-5/8 inches long x 3-3/4 inches wide x 1-1/2 inches high.