uxcell M1 Mod1 Pinion Gear Set, 5mm Shaft, 11T, 12T, 13T, 14T Motor Gears, Hardened Steel Pinion Gears with 3.17mm Coupler for RC Cars (Set of 4)

This universal Mod-1 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 (11T, 12T, 13T, 14T), 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 surface-hardened treatment makes them more wear-resistant, stronger, and less sensitive to notches, 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. Universal Mod-1 pinion gears fit 5mm RC motor shafts. Comes with a 5mm to 3.175mm shaft coupler, suitable for RC cars, trucks, etc. Package Contents: Includes four pinion gears (11T, 12T, 13T, 14T), four grub screws, and a hex wrench. Material: Made of carbon steel, the pinion gear has higher hardness, strength, and deformation resistance. Surface treatment: Surface hardening improves wear resistance, strength, and reduces notch sensitivity, making it durable and reusable. Note: The pinion gear's tooth surface is soft and cannot withstand excessive force.