Build a replica of a working, motorized crane with the KNEX Control Crane Building Set! With over 800 parts, this set is a true builders dream. It includes a battery-powered motor that can be repositioned to control 3 different working features: rotating the jib back and forth, positioning the trolley, or raising & lowering the hook. Cardboard cargo boxes are also including, so you can practice picking up and setting down cargo! Easy-to-follow, step-by-step building instructions are included, so youll be controlling the crane in no time. And hey parents! Building with KNEX supports developmental growth and puts kids on a path towards a better understanding of STEM subjects. As they fit the pieces together, theyre developing spatial awareness and honing their fine motor and dexterity skills. Think outside the blocks and build with KNEX! For ages 9 and up. 2 AA batteries are required, but not included. The information provided here is as complete and accurate as possible; however, product names, colours and/or materials are subject to change without notice.