iPEGTOP Strong Suction Cup Hooks Damage Free Stainless Steel Hook for Towel, Robe, Loofah, Bags, Coat, Kitchen Tools and Bathroom Accessories, 1 Pack RUSTPROOF & DURABLE - The hook is made of food grade 304 stainless steel and the suction cups are made of rubber and ABS plastic with chrome finish; Guarantee never rust, proved by 24-hour Salt Tests. CONVENIENT TO USE - Suction works best on NON-POROUS, SMOOTH and FLAT SURFACE, such as ceramic tile, glass, mirror, stainless steel, acrylic, etc. DAMAGE FREE - No tools, No drilling, No screws, No holes. Removable, reusable, and won't leave any marks or sticky residue ! SUPER SUCTION & LONG LASTING - It can hold things with the max load of 22 lbs, Perfect for Hanging Your Bags, Cloths, Towels, Kitchen Tools, Bathroom Accessories. MULTI-PURPOSE HOOKS - Made of Stainless Steel, designed to hang almost anything: towels, loofahs, bath robes, squeegees, kitchen tools -you name it! Suction works best on NON-POROUS, SMOOTH and FLAT SURFACE, such as ceramic tile, glass, mirror, stainless steel, acrylic, etc. Suction will not work over grout lines (<span class="a-text-bold">diameter of suction cup: 7cm/2.8in</span>) or on porous surfaces such as: WOOD, unfinished MARBLE, GRANITE, porcelain, wallpaper, natural stones (such as Travertines), painted wall &amp; any surface that is bumpy, etc.