The UGears Lock model can be used as an educational tool for kids or a fun project for adults. Model kits can help with the development of logical thinking, enhance attention and concentration skills, and help build a habit of attention to detail. The learning even continues after the model is finished! Teach mathematics, methodical thinking, and codebreaking by challenging kids to decode the customizable 3-digit combination code and then reward them by hiding goodies in the storage compartment. The model required no messy glue and no cumbersome tools to assemble, making for a hassle-free construction with the help of the detailed step-by-step instructions included. This easy, lightweight, fully self-contained kit is the perfect gift for tinkerers, learners, and secret-keepers of any age.