This set contains four plastic gears for hobby, craft or science projects. Plastic gears can be used to show gear reduction in motorized equipment or adjust the direction of rotation. Many different products such as watches, clocks, and cars require gears to function properly.
Red Gear = 41.2mm diameter with 40 teeth
Yellow Gear = 31.2mm diameter with 30 teeth
Blue Gear = 21.2mm diameter with 20 teeth
Green Gear = 12.9mm diameter with 12 teeth
The smallest gear in this set has a 2mm bore so that it can be connected to miniature DC motors. All other gears have a 1/8" bore and are compatible with the Axle Rods under product code: PWHEELS.
See Quantity Discounts below: