uxcell 32P Pinion Gear Set, 5mm Shaft, 18T, 19T, 20T, 21T Motor Gear, Hardened Steel Pinion Gear with 3.17mm Coupler for RC Car (4 Pieces)

This universal 32P pinion gear fits 5mm RC motor shafts. It comes with a 5mm to 3.175mm shaft coupler, making it suitable for RC cars, trucks, and more. Includes four pinion gears (18T, 19T, 20T, 21T), four grub screws, a 3.175mm (1/8") shaft coupler, and a hex wrench. Made of carbon steel, the pinion gears are harder, stronger, and more resistant to deformation. The frequency-hardened surface provides higher wear resistance, strength, and less notch sensitivity, making them durable and reusable. Ideal for replacing pinion gears on devices. Note: The pinion gears have soft teeth and will not withstand excessive force. This 32P (32 pitch) pinion gear fits 5mm RC motor shafts. It comes with a 5mm to 3.175mm shaft coupler, making it suitable for RC cars, trucks, and more. Package includes: four pinion gears (18T, 19T, 20T, 21T), four grub screws, and a hex wrench. Material: Made of carbon steel, the pinion gear has higher hardness, strength, and deformation resistance. Surface treatment: Frequency-hardened parts have higher wear resistance, strength, and less notch sensitivity, making them durable and reusable. Note: The pinion gear's tooth surface is soft and cannot withstand excessive force.