Features1CARBON STEEL: 10 teeth bike motor sprocket is made of carbon steel, wear resistant and corrosion resistant, long service life. 2PARTS PARAMETER: Bike motor sprocket is 10 teeth, the inner hole of teeth is 10x8.5mm, thickness is 5mm. 3APPLICABLE OBJECTS: 10 teeth chain sprocket is suitable for ordinary bicycle chain, suitable for reducer motor, applicable to a wide range. 4COMPACT AND PORTABLE: Bike motor chain sprocket is small and light, does not take up space and will not increase the burden of bicycle. 5EASY TO INSTALL: 10T bike sprocket is easy to operate, easy to install, smooth performance, suitable for replacing old and broken parts.SpecificationItem Type: Bike Motor SprocketMaterial: Carbon SteelNumber of Teeth: 10 TeethTeeth Thickness: 5mm/0.2inApplicable Chain: Ordinary Bicycle ChainApplicable Motor: Gear MotorTeeth Inner Hole Size: Approx. 10x8.5mm / 0.4x0.3inPackage List1 x BikeMotorSprocket