The Metal Marker contains liquid and grease-free ink, suitable for most types of metal such as galvanised steel. Ideal for identification, fill-in marking, signage or safety markings on any surface. The Metal Marker is xylene-free for less odour and meets the PSPC (Performance Standard for Protective Coatings for balast tanks of ships) requirements, so the markings are perfect for painting over without leaving any traces or bleeding.