Description: Bike Chainring: This bike chainring is suitable for 8 or 9 or 10 or 11 or 12 speed bicycles. It features 34T, designed to fit most cranksets with its BCD of 104mmInnovative Design: The positive and negative tooth design reduces wear and tear, making it less likely for the chain to fall off. This ensures a smooth and efficient ride every time Material: Made from reliable aluminum alloy, this bike chainring is built to last, providing you with long term performance and reliabilityNote: This bicycle chainring is suitable for standard 104mm BCD cranks, please carefully confirm your crank BCD and number of specifications before purchasingProduct Dimensions: Outer Diameter 14.3cm or 5.63inch Crank BCD 10.4cm or 4.09inch Adjacent Hole Distance 7.4cm or 2.91inch, making it an ideal size for most mountain bikes Specification: Material: Aluminum Alloy Size Chart: Outer Diameter 14.3cm or 5.63inch Crank BCD 10.4cm or 4.09inch Adjacent Hole Distance 7.4cm or 2.91inch Package Includes: 1 Bike Chainring Note: Please allow slightly errors 1-2cm or 0.39-0.79inch differences due to manual measurement. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.