Dimensions of adhesive surface: 3.5 x 4.6 cm. Holding capacity 0.5 kg. You can attach these hooks to any smooth surface without drilling or gluing. You can hang items weighing up to 0.5 kg. With these Lupus hooks, you now have the option to attach hooks to any smooth surface without drilling or gluing and remove them without leaving any residue. You can remove these LUPUS hooks without leaving stains or marks on the surface. They are water and dust resistant, adhere to most smooth, flat surfaces, and are even washable and reusable!