Housing made of shatterproof polyethylene, making it particularly durable. Especially suitable for workshops or schools. Also ideal in manufacturing areas, as many surfaces are available for adhesion, e.g., for attaching information to machines, in metal lockers, or during inventory on shelves. Special adhesive ensures a strong hold of the magnetic core in the housing. The underside of the ferrite magnets is coated to protect the magnetically adhering surface. Low in pollutants, manufactured in Germany.