Description: Handmade Gear Pulley Puzzle Toy for Kids Scientific Learning Experiment Educational Toy. Install the three gears and turn the bigger gear, and watch the rotation direction of the other two small gears. Or install the pulleys and rubber band, turn one of the pulley and observe the other pulley's rotation direction... A perfect experiment to help kids learn the rotation theory of gear belt pulley Exercise your children practical ability Train your children observation capability, thinking and analytical skills Material: Plastic Size Chart: Assembles Size (L x W): Approx 7.4 x 3.7cm/2.91 x 1.47inch Package Includes: 1 Set Gear Pulley Experiment Toy Note: Due to the manual measurement, please allow 1-5mm differences in size
