Kids STEM toys - 116 Pcs Plastic Gear Set for Technical Building Projects116 Pcs Technical Gears Axle Pin Connectors - Wheels Connectors Rack Gear Brick<br> 116 pcs Technical Gears Axle Pin Connectors - Wheels Connectors Rack Gear Car Building Brick Accessories Pieces Sets Compatible with Mindstorms Building Bricks Block Technical Toys (116 TECH Parts)<br> This listing packing including variety technical parts. Like Gear Differential Rack Gear, pin connector with/without friction, train link, Various accessories can be widely applied to MOC Car construction and creation.<br> ECO friendly ABS materials use. Brick parts or gear connection is good, neither loose nor tight, great quality.<br> Technical parts are compatible with standard sized bricks from other Major s. Variety of gears axle parts etc, can be applied to a substitute for assembly, designing and building your project, like models of robots, cars, cranes, engineering vehicles, and etc<br> Variety technical parts suit for DIY a creative model or create a new design, a great addition do your model stuff.<br> This is great parts for kids or adult who love play building engineer project. Great gift of festivals and holidays (Children's Day, Christmas, Halloween, Thanksgiving & New Years).<br> new and high quality.<br> Color: Grey, Black, Yellow, Red, Blue (The color of some parts will be different from the picture)<br> Material: Plastic