Using your Subaru JDM Dual Console Arm Rest Extension is easy. First, find a flat and safe place to park your car. Take out the arm rest extension from the package and check that all the installation hardware and instructions are included. Then, carefully attach the extension to your factory center console following the provided instructions. There's no need to drill or trim, so it should be a straightforward process. As for usage, rest your arm on the extension during your drive to enjoy the increased comfort. When it comes to maintenance, simply use a soft, damp cloth to wipe the arm rest regularly. Avoid using harsh chemicals as they might damage the charcoal - gray finish. Remember, this arm rest extension is only for manual transmission models, so don't try to install it on a CVT model.