Acouto Plastic Gear Set - 19 Piece cars, robots

Description: If you are an amateur model maker, you would know that gears are essential and necessary parts for models. Planes, cars, boats, robots and other small science and technology products will all need to use gears. Here we provide 19 pieces gears of different sizes that can meet your basic needs for making models. They are also great spare parts for old or broken gears. Features: Made of high quality plastic, wearable and long lasting. The products are spare parts for toys, suitable for the production of model making. Small parts, easy to use, great model making accessories for all cars, robots, etc. This is the gear set which includes 19 of gear parts. It can meet your needs. 16102B for example means 16 external teeth, 10 inner teeth, the opening diameter is about 2 mm and a shaft 2 mm wide. Specifications: Material: Plastic White Module: 0.5 Thickness: 4~5mm Type: 16102B, 18102A, 20082B, 20102B, 22082A, 22102B, 24102B, 24122B, 26082B, 28102B, 30122B, 30162A, 32082B, 34102B, 38082B, 40102B, 46082A, 48102B, 50102A 1. The first and second numbers are the outer teeth 2. The third and fourth numbers are the internal teeth 3. The number is the opening diameter 4. 2A means the central shaft is 1.95mm and tight with a 2mm shaft. 2B means the middle shaft is 2.05mm and has a loose fit with 2mm shaft. 5. Outer diameter 'gear=(number of teeth+2) x 0.5 mm e.g. 16102B means 16 external teeth, 10 inner teeth, the opening diameter is about 2mm and a shaft 2mm wide. Outer diameter of gear = (16+2) x 0.5mm = 9mm. Weight: 9g (approx) Package includes: 19pcs x gears