This mechanical lock by UGEARS is inspired by the legendary Da Vinci cryptex. Thanks to precise wooden craftsmanship and clever gearwork, after assembly you’ll create a functional numerical lock with a three-digit code to hide small valuables. Assembly is glue-free, parts fit together precisely, and the model is designed for smooth mechanical motion.

The build develops dexterity, patience, and imagination while introducing the principles of mechanics and gears. For optimal performance, simply lubricate selected shafts with wax according to the instructions to reduce friction and ensure smooth movement.

• Fully functional 3D puzzle – after assembly it serves as a real numerical lock.
• No glue – clean and enjoyable build using precisely cut parts only.
• Safe storage for small items – ideal for a flash drive, key, and little treasures.
• Quality wooden craftsmanship – detailed design and durable construction.
• Age 14+ – a great gift for teens and adult tech enthusiasts.