The Techno Gears sets are the perfect way to encourage youngsters to build. With 50+ colorful construction pieces and a power motor, the kit includes everything your young enginner needs to build their own moving and working masterpiece. The mechanics of Techno Gear sets include gears and will introduce and allow them to experience the science of gear ratio. These products align with and support STEM (Science, Technology, Engineering and Math standards). Requires two AA batteries (not included). Ages 6+ years.