These are fantastic for anything that is 50lbs or less. Pre-drill a small hole with a straight drill bit. Pre-drilling the hole makes it so very easy. Next screw in the plastic anchor. Work on 1 side at a time - but be sure you use a level to hang it straight. Next place the curtain rod, then the metal screw. You can be sure that when you open your curtains there is a lot of strength holding them up!