These no-drill adhesive wall hooks are designed for simple wall mounting on smooth, flat, non-porous surfaces. They are suitable for glass, metal, tile, and finished wood, making them a practical choice for home organization and picture hanging needs where drilling is not preferred. Made of stainless steel, the hooks offer a stable and non-slip structure for everyday use. The adhesive screw stickers are intended only for compatible surfaces, so they are not suitable for wallpaper, fabric, textured walls, brick, rough concrete, or other uneven areas. Please follow the included instruction sheet to help ensure correct installation and optimal adhesion. With a BUY 16 Get 16 Free size option and 16 pieces per pack, this set is useful for room organization projects that need multiple wall-mount points without nails or drilling.