Peace Keeper's Diversion Book set contains false two books, appropriately titled "Higher Power" and "Peace Within," which provide a convenient hiding spot, while blending right in with other hardbound books on the shelf. It is sold as a nested set. Large book measures 6.75" x 9" x 2.75" internally for full size handgun, and the smaller book measures 6.75" x 4.75" x 1.75" for medium or small frame pistols.