Make sure the surface has no drywall, lime wall, painted wall, plaster wall, wallpaper or any rough textured surface that is not smooth! If you have any questions about installation, please contact us through Amazon. I will help you solve the problem as soon as possible Free rotation The sticky hook can be rotated freely, and the angle adhesive hook can be arbitrary no matter how you stick it Load 4.5 kg These super sticky hooks can withstand loads for a long time. If you stick on a clean and dry wall, the hanging hooks can support up to 4.5 kg, which is enough for ordinary households! But note that the place you use is not easy and the wall conditions are not easy, so the load of the self-adhesive hook will also change accordingly No-hole installation The hook for hanging is very convenient to install, just clean the wall, tear off the protective film, press the hook hard, and stick the wall hooks for 2 hours, no need heavy tools such as screws, bricks and no drilling, quick installation Space saving You can fully use this hook as a bathroom hook, kitchen hook, back door hook, dish towel hooks, self-adhesive hooks for keys, adhesive hooks for walls, etc. The self-adhesive surface of our strong hooks is smooth and round, if you hang sweaters, coats, it will not scratch your clothes. It will make your room more organized