The sponge frame is free of drilling, so it won't hurt the wall. The surface wiredrawing treatment, the inside collect has the simple sense. Back with adhesive, stable paste, moisture-proof and heat-resistant, strong bearing. U-shaped design, easy to drain, which can store kitchen cloth, steel ball and other items. Specifications: Material: 304 stainless steel + adhesive. Size: 4.5*4.5*3cm. Color:show as picture. Usage: Clean the walls or glass. Tear the glue on the back. Attach the sponge holder and press firmly. It's better to wait 24 hours before hanging things. Package Included: 1/2/4pcs * sponge Holder