Assorted pack of 40 project gears. These gears do not require hot glue and are easy to remove. They transfer impressive amounts of power, while remaining simple enough for elementary use. Whether in our tinker set or as part of a larger STEM, science fair or engineering project, TeacherGeek gears are the preferred choice.
Gear colors may vary. The 40-Pack contains ten of the following sizes: 10 tooth, 20 tooth, 40 tooth, 50 tooth
Sold in packs of 40.