Using this plastic hinge is a breeze. First, get your 10mm long screws ready. Then, attach the hinge to your 20mm extrusion. You can use button screws for a closing angle of around 170 degrees or countersink screws if you want a full 180 - degree swing. When using the hinge, avoid applying excessive force to prevent damage. For maintenance, just wipe it clean with a dry cloth from time to time. This will keep the hinge in good working condition for a long time.