Using these Deltana 5 x 5 Square Hinges is easy. First, make sure the door and frame are clean and dry. Then, align the hinge with the pre - drilled holes on the door and frame. Use the provided #12 x 1/2 machine screws and #12 x 1 - 1/4 wood screws to secure the hinge firmly. For best results, use a screwdriver or drill. When it comes to maintenance, wipe the hinges regularly with a soft, dry cloth to keep them looking good. Avoid using abrasive cleaners as they can damage the finish. If the hinges start to squeak, you can apply a small amount of lubricant. And always check the screws periodically to make sure they are tight.