Kids learn about different vehicle designs and functions as they build their very own jobsite, enjoying hours of immersive pretend play that sparks their imagination. 【5-in-1 Construction Truck Toys Set】 This big truck features realistic sound effects and flashing lights, and includes 4 mini transportation toys: an excavator toy, a bulldozer toy, a crane truck toy, and a cement mixer truck toy. 【Friction-Powered Push & Pull-Back】 A gentle push sends the big carrier truck gliding across the floor, while the mini cars race forward when pulled back and released.