Features: Adapt to upgrading and refitting of 1/5 , 1/7 , 1/10 , 1/10 2.0 VXL Remote Control car. The speed depends on your gear ration. All metal internal gears with high strength and long service life. 46T / 50T / 52T / 54T motor main gear comes with 23T pinions. We offer four different types of small gears with different tooth number, giving you more choices in gear ration. Specifications: Component: 45# steel Type: 46T+23T/ 50T+23T/ 52T+23T/ 54T+23T Size of 54T: Approx.56mm/2.20inch Size of 52T: Approx.54mm/2.12inch Size of 50T: Approx.52mm/2.04inch Size of 46T: Approx.48mm/1.89inch Size of 25T: Approx.25mm/0.98inch Quantity: 1 Set Package Includes: 1 Set Remote Control Car Gears note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.