Complete Engieering KitThis mosaic puzzle and building toy for kids comes with 237 stylish accessories. Using a real power drill, kids can tighten and unscrew the nuts/bolts in the kit, developed through basic engineering, building games, and early math teaching. DesignIncludes 3 different shapes of models, 64 colorful buttons and 72 mushroom studs. Button art toys help develop children's hand-eye coordination, fine motor skills and creative thinking by arranging buttons on a board in various patterns. Creativity and ImaginationUnlimited possibilities. Suitable for kids of all ages, it's the best way for them to explore the world of geometry and architecture. Kids can follow the creative manual or create their own designs to spark their imagination and creativity and have fun! You never know what they can build! Gift Fun Educational ToysWe believe in making toys that are both fun and educational. They are made of high-quality plastic; they are BPA-free and non-toxic. Surprise your kids at their next birthday party. These kids toy exercises are perfect for boys and girls. ServiceWe provide first-class learning toys and excellent customer service. Our educational toys are designed by children's education experts to inspire creativity and imagination to create the best toys for young children without any risk!