It is a DIY handshakes generator toy, it can exercise your children practical ability, train your children observation capability, thinking and analytical skills. Bright colors will appeal to children and let them learn with fun and enjoyment. It is made of wood material, which is and lasting for use. Features -Color:Assorted Color -Material:Wood -Size:15.00X12.00X8.50cm/5.89X4.72X3.34in -Note: The light bulb is random color. - Made of wood material, the hand crank generator toy is not easy to damage. - The hand crank generator can bring interests to people, improve their hands on ability and concentration. - Manual assembly hand crank generator model, nice to help your child's developmental skills and learning mind. - Driven to rotate, the motor rotates to generate , and is output to the light bulb, so as to light the light bulb. - Creative and intelligent model toy, an experiment and teaching generator model, which will help your study in physics class. Package list: 2 x Sets of Generators