Use Classic KNEX pieces to build the Transport Chopper with motor or the 4 Wheel Drive Truck with lights Build the Transport Chopper with 343 pieces and turn on its motor to watch its chopper blades take off Or build the alternate helicopter or fixed wing airplane, Build the 4 Wheel Drive Truck with 313 pieces and all wheel steering to handle the toughest terrain Or build the alternate pick-up truck or dune buggy, Use both to build the ultimate build of a race car with working pistons and tail lights, Each set includes over 300 Classic KNEX pieces, Each set features main build and two alternate builds , Brand - KNEX Classics, No of Batteries - 5, Batteries Replaceable - 1, Batteries Required - 1, Battery Type - See Power Supply, Age - 7+, Pieces - Chopper - 342; Truck - 313, Dimension - 12 X 2, 5 X 9, 75 in, , Item Weight - 1, 64 lbs, , Package Type - Colored Box SKU: KNX235