Using this bezel is easy. First, make sure your silicon rubber pads are clean and ready. Then, simply attach the bezel to the pads as it's custom - made to fit them perfectly. When you want to create a 4x4 bezel for the full button pad, take two of these bottom bezels and match them with two top bezels. For maintenance, you can wipe it with a soft, dry cloth. Avoid using harsh chemicals as they might damage the black plastic finish. Keep it in a dry place to prevent any warping or damage.