These metal wall hooks for hanging are made of quality SUS304 stainless steel and perfectly designed,thus they are very sturdy and super practical. You can use them as hat hooks for wall, self adhesive towel hook,stick on picture hooks, self adhesive coat hooks heavy duty and so on.They are indeed ideal home storage hooks for small item organization at home and help to make our storage life much easier. The max load of these sticky back hooks strong is up to 3KG for long use and this is the conservative figure,in fact when they are properly applied on a smooth,clean and dry surface,the max load may increase to 8KG.They are metal hooks self adhesive,thus they can be used even on uneven surface.But just be aware that different types of surface may affect the max load of these door hooks self adhesive heavy duty. Your new stick on coat hooks strong are so easy to install that you just need to clean the surface and let it dry for a few minutes,then press the hook onto the surface.Before you put anything on it you had better wait for 24 hours to allow the glue to completely settle.No drill and no screw! These stick on wall hooks are rustproof,good looking and suitable for a variety of surfaces such as metal,wood,glass,tile and so on.They can stick fast and hard,thus they are not that suitable for walls covered with wallpaper since when taking them off the wall,they may stripped the paper off down to the plaster. Besides make sure they are correctly positioned before pressing on the wall as they are not removable once on the wall. Package contains: sticky wall hook X 4. Product Feature: 1These wall hangers without nails are made of SUS304 stainless steel material,and they are rustproof even in the bathroom. 2These strong adhesive hooks have a stainless steel brushed surface,thus they will not influence your decor at home. 3These quality towel hooks for bathrooms self adhesive have a BIG load capacity and are ideal for house organization.