[8-in-1 Building Kits] 622 pieces of Kearui STEM building toys can be assembled into 8 small models, 8 small models can be combined into a large model - Speed Chariot (No need to remove the existing 8 models). It encourage your kids to learn and think, explore the fun of STEM toys. [Compatible Building Blocks] This STEM building sets are designed according to building block standards and are compatible with Lego blocks. Add this block set to your child's block pool, kids can create more toy combinations and DIY more imaginative models. [High Quality STEM Toys] STEM building kit is made of safe ABS material, smooth and burr-free. It also comes with detailed assembly instructions to guide your child step by step to assemble the different shapes of the model so that parents and children never have to worry about not being able to assemble! [Learning while Playing] Connect STEM (Science, Technology, Engineering, Art and Math) with creativity, develop hands-on skills and creativity, keep kids away from mobile games and electronic screens, allowing them to really focus on doing something well. Good choice for parents to choose kids educational toys and gifts. [Ideal Gifts for Kids] Ideal gift ideas for birthdays, Children's Day, Thanksgiving, Christmas, Halloween, Labor Day, Summer Camp and other occasions. STEM building toys are designed to help children improve their skills, not only to design their own creative works, but also to gain a sense of self-achievement. Grow with your child.