theBathMart (6-Pack) Power Lock Suction Cup Storage Hooks for Bathroom & Kitchen [No tools, No Drilling] EASY: Fast installation, attaches directly to outside surface - No tools required, No Drilling needed CLEAN: Wipe Clean and Wipe Dry the Surface Before Use BEST: Suction works best on ceramic tile, glass, mirror, granite, stainless steel, acrylic, glossy laminate and any non-porous surface with a glossy finish ANYWHERE: Works with any smooth, flat and non-porous surface. Avoid grout lines for proper placement WARRANTY: comes with 12 month warranty, 30 days money back guarantee