• Easy to use: GAUDER self-adhesive magnetic sheets allow you to attach photos, postcards, paper, and posters to metal surfaces such as whiteboards, steel bars, or refrigerators. • Strong adhesion: The 30 x 30 mm adhesive magnets feature an adhesive film that ensures a firm and long-lasting hold on smooth surfaces of wood, plastic, metal, or ceramic. • Simple application: The magnets easily peel off the protective film and adhere quickly. They can be removed without leaving any residue. • Versatility: Ideal for school, home, office, workshop, and camping. To attach metal objects, it is recommended to use GAUDER metal tape. • Product dimensions: 15 cm wide, 0.2 cm high, and 27 cm long. • Customer service: GAUDER offers advice and after-sales support to ensure your satisfaction.