All kids' favorite Build It series features a new cool building set: Build It Gears. Put more than 30 large building pieces together to create your own moving model. Turn a gear and other gears will move, too! Even the propeller will spin! You can make a one of a kind moving vehicle or robot and play with it! Tired of the same model? Take it apart and create a completely new one! Build It Gears construction set features chunky building pieces perfect for safe construction fun. ELC's Build It Gears includes a base, 12 gears, 20 nuts and bolts, a screwdriver, and a spanner. This kids gears building set is compatible with all other Build It sets from Educational Toys Planet for more building excitement.