Summary I've increased the length of the Lid, Inner_Tube and Locking_Tool of "Combination Safe 00" to accommodate two additional rings. This increases storage space by approximately 2cm of additional length, 12cc of additional volume. Also, Now with 10,000,000 possible combinations, your valuables are... arguably one hundred times safer than they would be in the original version. To download all other parts go to: http://www.thingiverse.com/thing:586169