MATERIAL: Stainless Steel, PVC, transparent design makes your home beautiful and clean. 2. NO DRILLING: No drilling needed. Our self-adhesive nails will firmly stick on wall. They're great for mounting shelves, wall organizers, and kitchen racks. 3. EASY TO INSTALL: Wipe up and drywall, and peel off the cover starting from the bulge, then press the hook on a smooth surface for minutes. Easy to clean and reposition without surface damage. 4. SUITABLE FOR WALLS: Works on a variety of surfaces, like wood, tile, ceramic, metal surface, and more, BUT DON'T USE ON PAINTED & PAPER WALL. 5. HEAVY-DUTY: Solid, reliable, waterproof, and oilproof, heavy-duty can burdens high gravity, great bearing up to 5kg, It can support heavy items regardless of their material.