VGRASSP Push and Go 4 Sets Friction Powered Toy Trucks for Toddler, Perfect for enthusiastic little hands. Made of high quality, sturdy plastic. Long lasting friction powered. The Best Early Educational Toys. The perfect construction transport truck toy set let the children become a little architect, learn construction engineering knowledge while playing. 5 Types of Trucks: bulldozer, mixer, dumper truck, tractor, mini truck (additional addition) Distinguishing different names and functions of the trucks, cultivate baby's observation and attention. 1. Farm tractor with Wagon: Fun cartoon driver will amuse your baby, the carriage can be jointed to the main body to carry small items, and the rear door can be opened or closed exercising the flexibility of baby's hands. 2. Dump Truck: Rotating car hopper can discharge the building materials conveniently. 3. Cement Truck: The mixer can rotate up and down and Discharge the cement, letting kids know the principle of mechanical automation, cultivating their creativity and manipulative ability. 4. Bulldozer: The arm of the bulldozer can move up and down, each joint of it can move flexibly to form differently.