Using this brake line fitting is easy. First, make sure your 3/16' nylon brake line is clean and free of debris. Then, slide the ferrule fitting onto the end of the brake line. Next, insert the brake line with the ferrule into the fitting body. Finally, attach the cap to secure the connection. When handling, be careful not to damage the ferrule or the fitting. To maintain it, regularly check for any signs of wear or leakage. If you notice any issues, replace the fitting right away. Keep it in a dry place when not in use to prevent rusting.