Material: The suction cup hooks without drilling kit are made of high quality pvc, abs against corrosion and rust. Which has strong scalability with good airtightness. The maximum load is 3 kg. He always has a strongadsorbability in humid environments such as bathrooms and kitchens. Easy Installation: No-drill, no-drill, no-screw suction cup hook set. With vacuum cupping technology, simply place on a smooth surface, apply pressure and twist clockwise. Removable: No surface damage after removal, no marks, no sticky residue. Only 1 second to remove it, the only thing you need to do is turn the suction hooks to the left. Reusable: If you rent an apartment or move it frequently, and the landlord is not allowed to drill into the walls to attach the towel rack you need, then our product is for you. You can take our hookssuction cup without drilling wherever you want, even if you move. Suitable Surfaces: The no-drill suction cup hook attaches well to a smooth, flat surface, such as ceramic, tile, glass, mirror, marble, stainless steel, wood, and any non-porous surface with a glossy finish.Do not use on uneven, porous, curved or rough surfaces. You can use this extra strong suction hook in the bathroom, kitchen, living room, office, school, hotel or store.