This is the RC model kit that introduces junior engineers to STEAM concepts as they build their own motorized truck. Using the included power screwdriver and components, young mechanics assemble the chassis and cab and attach the wheels to create a cement truck, a crane, or a dump truck. After the build has been completed, the power screwdriver turns into a remote as the engineer becomes the driver and takes a test spin from up to 25' away. Also comes with a manual screwdriver. Requires four AA batteries (two for remote, two for truck motor). 61/2" H x 43/4" W x 43/4" D. Ages 3 and up.