General description AlwaysH 40 Pcs Suction Cups are designed for versatile use, made from soft and durable PVC material. These suction cups are non-yellowing, aging resistant, and provide a reliable hold for various hanging needs. Technical specifications Quantity: 40 pieces Diameter: Ø 40mm Material: PVC Usage Suitable for smooth and clean surfaces such as tiles, stainless steel, painted metal surfaces, and transparent glass. Ideal for applications like car shade cloth and bathroom doors. Installation Wipe the wall with a clean soft cloth before installation. Wash and dry the suction cup prior to use. Stick the hook surface to the wall, press hard on the center of the suction cup, and rub the surrounding area to expel air. Other information Note: Do not hang valuables on this hook.