Using the Pedro's Pro Chain Tool 3.2 is easy. First, make sure your chain is clean and dry. Adjust the bridge to fit your chain type, which can be anything from single - speed to 13 - speed. Just refer to pedros.com/chainfit if you're not sure about compatibility. When you're ready to work on the chain, use the ergonomic design to hold the tool comfortably and start the process. If you're installing a Campagnolo chain, use the included peening bit and backer. As for maintenance, keep the tool clean after each use. You can use a dry cloth to wipe it down. Store it in a dry place to prevent rust. If the bridge gets worn out, you can easily replace it. And always handle the tool with care to ensure its long - term functionality and reliability.