Toy State Caterpillar CAT Apprentice Ultimate Machine Maker Dump Truck with Wheel Loader and Excavator Construction Building Vehicles 3 in 1 Set Contains necessary parts for three machines: Build one at a Time--Dump Truck, Excavator, and Bulldozer Build classic Cat machines or mix and match to create fantasy machines Features our Smart Lock Technology, allowing for easy assembly and take-a-part play Includes a realistic screwdriver and pieces to build your own Cat machine Reusable carrying case for easy storage