Using these Deltana 5 x 5 Square Ball Bearing Hinges is easy. First, find the right spot on your door and frame to install them. Make sure to use the provided #12 x 1/2' machine screws and #12 x 1 - 1/4' wood screws for a secure fit. When opening and closing the door, you'll notice how smoothly it moves thanks to the ball bearings. As for maintenance, occasionally wipe the hinges with a soft, dry cloth to keep them looking good. Avoid using harsh chemicals as they can damage the finish. If you notice any loose screws over time, just tighten them up. These hinges are built to last, but with a little care, they'll serve you well for years in both your home and business.