Watch your young mechanic build this Techno Gears Mud Runner that has power, attitude, excitement, and action! With 60+ colorful construction pieces, oversized tires, and power motor, this kit includes everything your monster truck enthusiast needs to build their own moving and working Mud Runner truck. The mechanics of these Techno Gear sets include gears and will introduce and allow kids 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 6-12 years.