MukikiM Construct A Truck - Excavator. Take it Apart & Put it Back Together + Friction Powered(Like 2-Toys-in-1!) Awesome Award Winning Toy That Encourages Creativity! Challenge your child by letting them use the included tools to take it completely apart and put it back together. Brain Child Award Winner - Perfect toy for encouraging creativity, motor skills, and hand/eye coordination all while enjoying learning! Runs on friction power - just rev it up and let it go - NO batteries required!! 36 pieces to screw, unscrew, put in place, try in another place, turn, tighten, and build. 2-toys-in-1: keep your little constructor busy for hours with this fun and innovative new toy!