A member of the original 5 mechanix sets is still one of the best selling mechanix sets sold today. The building experience is enhanced with the real engineering tools that you can use to create the 20 models mentioned in the set before exploring the endless creativity this set allows. Skills creativity dexterity knowledge age : 7-99 years category : mechanix types : building & constructions this kit comes with all the tools, and parts to build 20 different models, one at a time. After completing these 20 models, the builder can use the nuts bolts, and other versatile parts to create many more models and projects. The manual provided can help you build any of the models mentioned in the set. Just remember these few points in your build: 1. Follow the steps mentioned in the manual and watch out for the notes mentioned. 2. Always remove the parts required in the step aside. After completing the step, noticing if any parts are left is a good way to recheck before moving on. The mechanix system provides the user with tools he/she needs to help them bring an idea, a or a thought to reality. It inculcates curiosity to learn, ability and confidence to build something with real life tools. This is an important skill that helps in being able to think out of the box and builds your cognitive skills. Like you need to put a child in water to teach him to swim, you need to give him the mechanix pieces and screw driver to make him want to connect things. Construction is building up of an idea or project first in the mind, with the right tools in the hand. Mechanix 4 is a comprehensive set comprising of more than 263 parts which you can use to unleash your creativity beyond most other sets. The varieties of parts that this set comprises are designed for creative building. This is one of the most desirable sets by hobbyists for its versatile nature but can be a little intimidating for first time builders. For them the equally big but easy to build mechanix advance would be more appropriate. 263 pieces 20 models includes a screw driver and spanner. (mx-01006)