OverviewFlexible with Different Postures Our VATOS STEM Engineering Blocks are cohesive but flexible. All the joints can be rotated and the head can be turned around. You can design different postures for it without limit. Though it's flexible, its joints are still tight enough that you don't have to worry about it takes apart easily. What Models you can build: Roller * 2 Mixer * 2 DTH Drill Var * 2 Pushing Stone Car * 2 Crane * 2 Bulldozer * 2 What Models you can build: Wood Grab * 2 Forklift * 2 Mining Vehicle * 2 Construction Vehicle * 2 Road Header * 2 Excavator * 2 100% Safety for Your Kids Every component of the VATOS STEM Take Apart Toy for kids has been certificated to be Non-Toxic and Lead/BPA/Phthalate Free by the Third-Party Lab and exhaustively sterilized before they go on sale. Made with ABS plastic, this STEM Building Blocks Kit is washable, which is convenient for you to clean and storage after use. Smooth edges could prevent children from scratching their hands during playing. Enclosed with a brick separator, you can separate the models you have built and re-build a new model easily.