With the maximum loading of 12 lb, suction cup hooks have the advantages of economic, practical, contemporary style, dampproof, waterproof and repeatedly used. Strong suction cup to prevent slipping. Simple Installation Steps , Choose and Clean any smooth surface. 2, Fully loosen the hook counter-clockwise. 3, Apply pressure while twisting the hook clockwise until fully tight, while enhancing the beauty of your kitchen and bathroom. Convenient, no drilling, no screws. Shower towel hook only fix to smooth, clean, flat and non-porous surface, suction hook perfect for glass, mirror, smooth tiles, stainless steel, plastic, acrylic, cultured marble, smooth polished metal etc, matte black towel hook cannot be used on rough surface or cement lime walls, wallpaper, non-painted wood, mosaic. NO Tools. NO Screws. Hassle-Free Installation. No more ugly holes in your shower Simply choose a smooth surface, Twist & Lock, and you're done in no time The hangers are removable and repositionable, and won\u2019t leave any marks or sticky residue