Experiment with wheels, gear ratios, and energy transmission by building tricycles, bicycles, cars, and motors. 16-page color guidebook.
 | WARNING: CHOKING HAZARD! Small parts. Not intended for children under 3 years of age. | | Product image and description is provided by the manufacturer, and is as accurate as possible. Some details of the product may be subject to change without notice (graphics, decoration, wheel color, etc.). eHobbies is not responsible for these changes, as it does not alter the function or value of the product. |
| Contents: gears, knowledge wheel, joint pins, string, and more. |
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