Using these brake lines is easy. First, make sure your car is safely parked on a flat surface and the engine is off. Locate the rear brake lines and carefully remove the old factory rubber lines. Then, install the new Faction Fab stainless - steel brake lines using the included hardware. Ensure all fittings are tightened properly. When it comes to maintenance, regularly check the brake lines for any signs of damage or leaks. If you notice any issues, replace the lines immediately. Also, keep the lines clean from dirt and debris. When driving, be aware that the improved braking response might be different from what you're used to with the old rubber lines, so adjust your driving style accordingly.