3 Wheel Combination Secret Lock Puzzle Box - Custom Pre-Set to the Combination of Your Choice Unique box from Creative Crafthouse - you must align the 3 wheels to a position that will allow the hinged lid to open. On this version YOU CAN DEFINE THE COMBINATION AND WE WILL PRESET IT FOR YOU Outer box measures about 5" x 2.67" x 2.8". Inner dimension (max size of object that could fit in box) are 4.6" x 1.9" x 1.6" We offer a model with a standard combination, but on this model you can define the combination. Please let me know with your order. I need 3 numbers, each number between 1 and 12 like the hands of a clock. Let me know and I will preset the box to that combination.