ROKR 3D Wooden Puzzle Mechanical Treasure Box Model DIY Brain Teaser Projects for Adult Age 14+ Birthday Gift Educational Toys Wooden Puzzles for Adults

【Front】This rotary knob is used to enter the password to open the box. The password is set at the time of assembly. It cannot be changed when finished. The password is a three-digit number. You have 810 choices between 000 to 999, But 190 combinations were not available, please refer to the manual for details.