Flat-top bottles are a form of metal packaging (e.g. made of tin-plated sheet steel = tinplate) for chemical/technical goods such as oils, paints etc. The bottles are safe for transport and protect the contents, depending on the design and approval also hazardous substances, against mechanical influences, light and temperature influences. Pull-out spout HZ 401 or the screw cap closure HZ42 (with child safety) fit into the DIN hole (42mm). Tinplate bottles are not suitable for contents containing water.