The Dual Book Lock Box with Key Lock by Barska features a solid steel construction. On the exterior this double book safe is disguised to appear like two books but open the cover to reveal a strong compact steel safe. Easily blends in plain sight on a book shelf. Includes set of keys. Discretely store valuables, passports, cash, and jewelry. Interior dimensions: 5.5" x 2.75" x 8.25".