Main Features:

â—Ź High quality ABS plastics raw materials, Safety and environmental protection, It can be sterilized at high temperature, Non-toxic, Tasteless.
â—Ź High gloss, No burr, High hardness, No deformation, It can be folded over and over again, Good playability, Fine workmanship, Close connection.
â—Ź It allows children to learn the principle of variable speed, Centrifugal force, The application of the crown gear, Chain gear drive, The effect of the axis, The action of the inert wheel, The application of ratchet and pawl and the understanding of pulley.
â—Ź Cultivate children's hands-on ability, Free combination, Infinite creation.