For large applications, when a broad tip marker is needed - Sakura's Extra Broad marker will do the job. With its rectangular 10mm x 16mm shape tip, Extra Broad can make a 16mm stroke with one pass. The durable plastic barrel withstands abuse and is made for industrial use. Ideal for fill-in applications, identification signage, or anywhere large bold writing needs to be noticed. Writes on most surfaces: plastic, wood, metal, concrete, glass, slick papers, cardboard. Ink adhesion is dependant upon type of surface. Available in three ink colors: black, blue, and red. Alcohol based solvent and dye-stuff colorant. Alcohol based cleaners will remove ink from non-porous surfaces. Not recommended for use on fabrics intended to be washed.