Description STEM Supported: Integrating boring Technological and Engineering knowledge and concepts into funny games, our transformer toy is designed for children exclusively to improve their science, technology, engineering and math skills.^ Multiple Models: The STEM building brick kit could be built into a big flexible robot 8 military strategic tank vehicles, each vehicle has 2 forms, 8 small models combine 3 different big models. 19 models in total can maximize the hands-on ability of your child.^ Works with All Major Brands: Compatible mix and build with your existing name brand building bricks. Build your own amazing cars and more with this classic collection of major brand bricks.^ Educational Toys: In the process of building blocks, recognizing robot and vehicle parts information, cultivating childrens hands-on ability, inspiring childrens creativity and imagination, is the perfect toy to cultivate childrens thinking ability at an early stage.^ Safety Comes First: The building blocks kit are of premium quality ABS materials. The building bricks are made from non-toxic materials, BPA free, easy to wash and clean with hot or cold water.