Durable handles and locking clasps make these cases perfect for on the job or just at home. Removable dividers make the box easy to customize. Small box had 9 - 24 compartments and exterior dimensions of 15-1/2"L x 11-3/4"W x 2-1/2"H. The large box has 8 - 32 compartments and exterior dimensions of 18-1/2"L x 13"W x 3"H.