Creative?? Innovative?? Imaginative for young minds.</br>Introduce kids to scientific concepts related to gears through hands-on learning.</br>Versatile set?? combines with other similar robots.</br>Integrating with STEM (Science?? Technology?? Engineering?? and Math) concepts.</br>Recommended age 9+</br></br>Product Description</br></br>Features: </b> ? This Set Includes 399 Pieces </b> ? Enhance Creative Mind. </b> ? Ideal for Fine Intelligence Skill Development </b> ? Perfectly Sized Blocks for Little Hands</b> Batteries are NOT included.</br><br/>http://www.amazon.com/gp/product/B01F999QZ6