Using this Deltana square knob is a breeze. Just simply grab it and pull or push your cabinet or drawer. For installation, you'll need basic tools like a screwdriver. Make sure to align the holes on the knob with those on your cabinet or drawer and then secure it tightly. When it comes to maintenance, a simple wipe with a soft, dry cloth regularly will keep it looking shiny. Avoid using harsh chemicals or abrasive materials as they can damage the finish. If there are any stubborn stains, you can use a mild soap and water solution, but dry it thoroughly afterwards. Also, check the screws occasionally to ensure they're tight, so the knob stays firmly in place. This knob is suitable for both home and commercial use, but remember to handle it with care to ensure its long - term durability.