Using this bike cone wrench is a breeze. Just pick the right size for your bike's adjusting cone and fit the wrench onto it. Then, turn it to make the necessary adjustments. When using it, make sure to hold the handle firmly to avoid slipping and causing damage. For maintenance, after each use, wipe the wrench clean with a dry cloth to keep it free from dirt and debris. Store it in a dry place to prevent rust. If you notice any signs of wear or damage, it's a good idea to replace it to ensure continued performance and safety.