Perpect gift for childen to learn knowledge through this experiment, to enjoy DIY thus their hand-making ability.
Kids can not only play with it bu also know some knowledge from it.
Learn physics knowledge with fun.
High quality wooden material made with no toxic.
It can be DIY the colour by hand, perceiving the color.
To improve kid's ability of hand-making.
1 set of plates
Several three blade propeller (color random), belt pulley, screw nut
1 gear box
2 nylon column
2 fixed angle
2 foam ball