Sharpie® Magnum Industrial strength permanent marker with solvent based (Xylene). Durable aluminium barrel and felt tip stand up to heavy use. Large ink supply for big projects. Delivers an extra wide highly visible line for those really big marking jobs posters, shipping cartons, signs and charts. Designed for long abusive use under demanding conditions. Ideal for surfaces such as aluminium foil, ceramic/tile, concrete/stone/brick, boxes, metal, plastics, vinyl, wax paper and wood.