This set of bushings and gears of different amounts of teeth is a great tool to teach your students about gears. They can also be used in projects on simple machines and other activities of the like.

Product Features:

• Everything included is all-plastic and coloured
• All the gears have a center hole 4 mm in diameter
• The whole comprises of 5 gears that each have 10, 20, 30, 40 and 50 teeth as well as two bushings