STEM Construction Toys-Bulldozer Building Kit,Front Wheel Loader,Top Engineering

🧿STEM Toys for 6-12 Year Old Kids - This building set contains 450 pieces for creative play. Independently and together for kids age 8, 9, 10 and up. It's a perfect toy to encourage learning of mechanics and engineering in a person's childhood. 🧿Cool Vehicles Construction Loader - This construction Bulldozer with raising front arm, tilting bucket and front-wheel steering. The crank, gear and resistor make controlling the bucket and wheel. 🧿Don't Need Any Batteries - Not be glued to electronics is wonderful. The parents also agree. Develop children's fine motor skills and eye-hand coordination, cultivate children's patience and improve children's concentration while playing. It will keep kids occupied and spend quality time with family and friends. 🧿Great Gift for Children Who Like Building - Ideal gift for birthday, prize, new year's day, christmas, children's day, thanksgiving day, easter, flag day, halloween, STEM, summer camp activities, back to school. 🧿Made of High-Quality ABS Plastic - Durable for kids to play with. The same material used by most famous companies. All bright, colorful pieces are certified non-toxic and BPA-free. And e-book is available. Kids will be engaged in creative play for hours! Broken part? Missing part?