Power up and create moving wow with the K'NEX Imagine Power & Play Motorized Building Set. This set brings your models to life with a motor and over 525 classic scale K'NEX rods and connectors to build and move anything you can imagine. Using the included step-by-step color-coded instructions to build 50 different models. Half of them include the motor for life-like movement! Models range in difficulty so any level builder can succeed in creating a carousel, rescue chopper, basketball game and more! And once the builder is done, use the re-usable storage container for builds in progress, or to hold the K'NEX rods and connectors. Most models can be built one at a time. Recommended for builders 7 and up. Motor requires 2 "AA" batteries which are not included.