How to use: First, make sure your bike frame is a BBRight type and your crank is 24/22mm. Then, install the adapters between the frame and the crank. You can use the eight 0.7mm shims to fine - tune the chain line according to your needs. Notice: Only use these adapters on compatible bike models as listed. Don't force installation if it doesn't fit properly. Maintenance: Keep the adapters clean and dry. Regularly check for any signs of wear and tear. If you notice any issues, replace them promptly to ensure a smooth and safe ride.