[Stainless Steel Material] The towel hooks are made of high quality SUS304 stainless steel, matte black classic elegance, corrosion protection, rustproof, self-adhesive, waterproof [Load Capacity Powerful] The wall hooks are extremely adhesive and waterproof, can withstand a force of 7 kg. Please wait 24 hours before placing anything [ No Drilling ] Easy to install, this self-adhesive hook does not need to drill holes in the wall. Just peel off the sticky tape on the back and stick it on the wall. Using a hair dryer to heat the self-adhesive could remove the sticky hooks. No damage to the wall [Wide Application 4 Hooks] The adhesive hooks can be used on a wide variety of smooth surfaces, such as wood, glass, marble, ceramic tile, etc. (They are not suitable for non-smooth wallpaper walls, plaster walls or rough textured surfaces) [2 Extra Pcs of Adhesive Pads] With these self-adhesive foam pads, you can move the hooks bathroom in other places or reuse your old hooks. That means you have a total of 6 chances to use these hooks, very convenient and eco-friendly