Make sure the surface is free of drywall, lime, painted walls, plaster walls, wallpaper or any rough textured surfaces that are 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 The sticky hook can rotate freely, no matter how sticky the sticky hook is, it can be at any angle < p>These super sticky hooks can hold the load for a long time. If attached to a clean, dry wall, the hook can hold up to 4.5 kg, which is enough for ordinary families! But it should be noted that the place you use is not easy and the condition of the wall is not good, so the self-adhesive hook load will change accordingly. L Hook installation is very convenient, just clean the wall, tear off the protective film, press the hook firmly, let the wall hook stick for 2 hours, no need to install. 'Heavy tools such as screws and bricks do not require drilling and quick installation You can fully use this hook as a bathroom hook, kitchen hook, back door hook, hook for tea towel, self-adhesive key hook, adhesive wall hook, etc. The self-adhesive surface of our strong hooks is smooth and rounded, it won't scratch your clothes if you hang sweaters, coats. it will make your room more organized