Learn about the inner workings of a combination lock as you build one with your own two hands! Step-by-step instructions make it easy to slide each piece into place and create your own custom combination.
Hide a secret message inside and share your code by means of a riddle. Use the metal shackle to turn it into a padlock for keeping a special cupboard locked. There's even a slot for coins on the side - You can turn it into your own high-security coin bank!
Easy to build yet designed with true-to-life engineering, our 4M KidzLabs Combination Lock is a brilliant way to get kids excited about real mechanical construction.