Pack of 25  gears. All are made of coloured plastic and have a center hole 4 mm in diameter. Gears are offered in different numbers of teeth. Great for teaching students about simple machines.

Pack of 25  Coloured Plastic Gears

This pack of 25  coloured plastic gears is an excellent fit for your labs and lessons on gears. They can also be useful for projects involving simple machines and other activities of the like.

Product Features:

The gears have a 4 mm wide center hole and are made of coloured plastic. There are multiple models offered, with differing amounts of teeth:

• 10 teeth
• 20 teeth
• 30 teeth
• 40 teeth
• 50 teeth

The diameters of the gears correspond approximately to the number of teeth. For example, the 50 tooth gear’s diameter would be about 50 mm.

Gears Specification

Size(mm)    Width(mm)    Thickness(mm)

• 10    11    5.65
• 20    21.33    5.56
• 30    31.23    5.55
• 40    41.42    5.59
• 50    51.21    5.56