Using these Park Master Link Pliers is easy. First, find the master link on your chain. Then, insert the specially sized jaws of the pliers into the master link. Once in place, gently squeeze the vinyl - coated handles. This will help you either remove or install the master link quickly. When using the pliers, make sure they are properly aligned with the link to avoid any damage. After each use, wipe the pliers clean with a dry cloth to prevent dirt and debris from building up. Store them in a dry place to avoid corrosion. If you notice any signs of wear on the jaws or handles, it might be time to replace them to ensure they continue to work effectively.