High-quality material: The towel hook is made of high-quality space aluminum, which is rust-proof, waterproof, corrosion-resistant and has excellent load-bearing capacity. 3M tape has the best adhesion. (Dimensions: 4.5 x 4.5 x 3 cm. Easy to install: Peel off the protective film on the back and stick it on a smooth surface. It only takes seconds and saves time and Energy. Finally, wait 24 hours before hanging anything. Wide application: Suitable for wood, glass, tiles, walls, bathroom doors, latex, kitchens and other smooth walls. (not suitable for matte wallpaper walls or Lime walls) STRONG HOLD: To successfully install these strong adhesion towel hooks without drilling the room aluminum, it is very important that the user clean the surface of grease, dust and dirt before attaching the hook.