Use real engineering tools and techniques to create amazing powered models! The Erector 20 Model 230 pc Construction Kit includes a whopping 230 pieces that young engineers can use to create 20 different motorized models. This building kit includes a working 3V motor that children can use in their models to make them drive, fly, swim, pick up, or do any other function that the model does! This multi-model construction kit contains the pieces for young engineers to build a race car, a ski lift, an airplane, a monster truck, a robot, and more moving models. The Erector 20 Model 230 pc Construction Kit contains an instruction booklet that children can read to find out how to make these unique, motorized models. Young builders can also make their own models with this classic construction set. This building toy also includes a real wrench and screwdriver. This Erector construction kit is compatible with other Erector sets sold in Educational Toys Planet. Erector 20 models building set requires 2 AA batteries (not included).