ZCtron Twostage Acceleration Hand Crank Generator Physics Experiment Science Toy Diy Invention Manual Generator

1Purpose machine can be assembled into a light version

2The parts are assembled by themselves, and the connection of the rocker is connected by the square column

3It is more secure and more stable

Please insert some deep

So that it can work in high performance

4Children can make their own brain assembly, which enhances the child's care and patience

5Installation is not complicated, but it requires some care and patience

And it is with playability

Item Type: Lighting-Accelerated hand shake generatorMaterial: ABS plasticPacking: Ziplock bagToy Type: Physics ScienceSuitable Age: 7-14 years old1 x Motor Bracket1 x Motor1 x Connector5 x Square Column1 x Axle1 x Crank2 x Blue Gear1 x Orange Gear1