Just pulled from the KNEX vault, the KNEX Thrill Rides 3 In 1 Classic Amusement Park Building Set! One of the original, this KNEX Classic Building Set replicates everything that KNEX was built around and still stands for. Motorised movement sends the 744 classic KNEX parts and pieces on a ride of a lifetime. Also included in the instructions booklet, is step by step instructions for two additional models; a Swing Ride and a Boom Ride. All models can be built one at a time. Ideal for builders aged 9 to 14 years old. Requires 2 x AA batteries (not included).