Your child can become an engineer by mounting, dismounting and assembling his favorite construction vehicles with the Cat Junior Crew Kit "Make Your Own Vehicle". Each box contains everything he needs to create his own vehicle, as well as a truck driver figurine for the job site to truly become alive. Your child will develop fine motor skills using the included screwdriver and bolts to easily assemble the vehicle parts. Stimulates creativity by allowing different combinations of parts to create custom vehicles. When it's time to stop, everything can be stored in the reusable transport box that contained the product, making storage easy and fast. From 3 years old. Collect them all!