Do we need to nail into the wall to hang the wall hook? No. LAOKETON heavy duty hooks have a self-adhesive backing for long-term use. Made of premium 304 brushed stainless steel, the towel hooks will not rust in wet environment for years of use. Widely Application Heavy Duty self-adhessive hook, strong enough to keep your things securely in place. The adhesive hooks great for hanging towels, robes, hats, keys, coats, pans,ect. Bedroom hooks/Coat hooks/Kitchen utensils hooks Pack of 4 Adhesive Hooks, Four different colors. Waterproof, and rustproof, oil-proof and high and low temperature resistance. Step 1：Clean and dry the wall surface. Step 2：Stick the self-adhesive on thehook and press. Step 3：Stick it to the wall,press hard. Step 4: Wait for 24 hours to use. Read more Attentions： 1. Suitable for all kinds of smooth hard surfaces such as smooth tile, glass, plank wall, metal surface. 2. Not suitable for wallpaper, oily wall, lime wall and rough surfaces，as this will damage the wall surface. 3. Do not hang overweight, expensive or fragile products. 4. The best working temperature: 41°F~133°F (5°C~45°C). Heavy Duty Wall Robe Hooks Heavy Duty Wall Robe Hooks Bone Shape Dog Leash Key Holder Kitchen Towel Holder Wall Mounted Mail Holder Wooden Color Four colors Two colors Burnt paulownia Six colors White Material SUS 304 Stainless Steel SUS 304 Stainless Steel Metal, Wood ‎Silicone，Acrylonitrile Butadiene Styrene Metal, Wood Product Dimensions 2.16 x 2.75 x 0.98 inches 2.16 x 2.75 x 0.98 inches 11.8 x 5.9 x 0.39 inches 2.16 x 2.96 x 0.98 inches 11.8 x 7 x 3.3 inches