Super strong lock hook made of environmentally friendly rubber suction cup and durable plastic, with a surface coating that is waterproof and rust-proof. It's environmentally friendly, non-toxic, and tasteless. Strong suction power, no adhesive required, and can accommodate objects up to 5 kg. It's reusable. You can easily clean and reuse the hook without leaving unsightly adhesive residue. Easy to install, no drilling required, no screws required. It can be disassembled and installed by hand in just a few seconds. Vacuum suction cup hooks meet all our storage and hanging needs, useful in bathroom, kitchen for hanging towels, bathrobes, kitchen utensils, clothes, hats, keys, bags, jackets, etc. Material: ABS plastic (chrome plated) + TPU rubber Size: L*H*W=3.4inch*2.3inch*2.4inch Convenient 2-step installation: 1. Please clean and dry your wall before use. Make sure the wall is flat and smooth. 2. Hold the hook on the wall for a few seconds, then simply push up the locking lever to lock it. Use Tips and Attention: This powerful vacuum suction cup hook only works on non-porous, smooth surfaces such as polished ceramic tiles, mirrors, glass windows, polished stainless steel walls and plastic boards, etc., and will not work on porous, bumpy, rough or textured surfaces such as rough coating surface, unpolished marble or wooden door, sturdy porcelain surface, etc.