Power Lock Portable Suction Cup Hook Holder,Strong Stainless Steel Hooks for Bathroom & Kitchen,White,by NL HOME Materials: high quality ABS plastic, premium grade stainless steel and rubber Heavy Duty Quality: Each suction cup hook can hold up to 20 lb (10 kg) with correct installation Color: White - Size: 2.3'' Diameter INSTALLATION: NO drilling NO screws. Incredibly easy to install. Wipe clean and wipe dry the surface ATTENTION: Only Fit for any NON-POROUS & SMOOTH surface . CANNOT maintain on porous or rough surfaces: Wood, Marble, Fiberglass, Paint wall, Porcelain , Nano Tiles , Plaster and wood , or across grout lines. Best gift ideas for business or family!