25 BUILDING MODELS - Let your child build one of 25 different construction themed vehicle ideas (models can be built one at a time). Parts can be used to rebuild a helicopter, a buggy crane and much more or kids can mix match pieces to come up with their own original design for open-ended fun.REAL WORKING VEHICLE - Build a motorized crane and bring it to life with the 6V electrical motor. Play with its rotary body and extendable hook!STEM TOY: For over a hundred years, Meccano has been promoting children's STEM (Science, Technology, Engineering, and Math) learning as they build and play .DEVELOPMENTAL BENEFITS: Meccano supports key areas of a child's developmental growth. As they click the different parts together and discover how the building system works, they're strengthening hand-eye coordination, fine motor skills, problem-solving skills, spatial awareness and exercising their imagination!The Meccano Super Construction Set is made for children ages 10+.