*Learn how mechanical emission by building mechanical group assembled bow machine set.
*Kids learn additional information about the models they're building and their uses in real life.It is conductive to learn STEAM education and improve childrens' comprehensive actity.
*The assembly of mechanical structure creates children's imagination and enhance communication with parents.
*Principle of dynamic design： Provide sufficient bounce for launch of the plastic dart.
*More than 200 snap together pieces.
*Perfect gift to family and friends who loves machine set.
Product size: 6.5*22.6*25.2cm/2.55*8.89*9.92in;
1*Mechanical Group Assembled Bow Machine Set