Century's High temperature marker is an industrial grade valve action paint marker for any surface. The ink is formulated specially for marking surfaces & objects that are exposed to very high temperature & harsh environments. It is made up of a hard aluminum body filled with ink and felt-tip with valve action for smooth ink flow. The markings have to be made at room temperature & works on all kinds of surfaces including steel, metals, ceramic, glass, rubber, concrete, alloys, wood etc. The markings made by the marker remain permanent at high temperatures up to 500-1093 degrees Celsius (930-2000 F) depending on the colour. The marker works on all porous & non-porous surfaces including metal, glass, ceramic, wood, plastic, rough, smooth etc. Ideal for Iron & steel, Automobile, Welding, Ceramic & Glass manufacturers.