For ages: 8+ Learn about: Combination Lock Introducing our exciting DIY STEM Kit - the Combination Lock Box! Delve into the world of mechanical puzzles and learn how a combination lock works with this engaging educational toy. From understanding the numerical patterns to deciphering the secret code, this hands-on experience will encourage critical thinking and enhance their STEM knowledge. Unlock endless fun and learning possibilities with our STEM Kit - the Combination Lock Box!