About This Item: -It uses magnetic splicing, which can be freely assembled and disassembled, and you can DIY various shapes to cultivate your imagination and creativity. -Made of high-quality ABS material, non-toxic, harmless, with smooth edges and safe. -Equipped with different types of engineering vehicles to promote cognitive development, explore engineering concepts through interactive play, and improve precise problem-solving skills. -It adopts inertial gliding, no electricity is needed, and it brings more fun. -It is a perfect gift for Christmas, Halloween, Birthday, New Year, Children's Day. .