1、Product Information: Our gear set contains 32P 13T and 15T gears, you can choose according to your needs. Please make sure your spur gear and pinion gear have the same pitch, otherwise the teeth will not mesh. 2、Premium Material: RC car pinion gear set is made of premium steel, which is flexible, sturdy and reusable, use our car gears and enjoy your happy RC racing time. Sturdy metal construction ensures long lasting performance. 3、Good Mechanical Processing: Good mechanical processing makes 32P gears less rough and noisy than other pinion gears, making them roll smoothly.32P pinion gear set is made of hardened metal construction. Longer service life 4、2 Different Teeth Pinion: The speed depends on your ratio. We provide 2 kinds of pinion with different teeth, so that you can have more choices in terms of transmission ratio to meet your different needs. 5、10pcs: Our RC model car pinion gear set contains 5pcs 13T gears, 5pcs 15T gears and 15pcs screws, the quantity can meet your needs, the screws are easy for you to replace and simplify the installation process. Item Type: 32P Motor Gear Set Material: Steel Included: 13T Gear, 15T Gear 5 x 13T Gears 5 x 15T Gears 15 x Screws