●Stability---Buckle design, stronger suction, less likely to fall off. ●Individuation---Freely to remove or adjust the length. Easy and smooth. ●Durability---15lb rated weight capacity. Thickening silicone suction cup & heavy-duty stainless steel bar. ●Elegancy---No drills. Leave no trace on the wall. Ageing-resistant chrome plating. ●Widely Used---For smooth surface (glass, marble, etc.). For slightly rough surface (Such as wood door. There are adhesive discs in the package to make the surface smooth). But not for uneven or painted surface.