Sakura Extra Broad Permanent Ink Marker, Black For large applications, when a broad tip marker is needed - Sakura's Extra Broad marker will do the job With its rectangular 10 millimeters by 16 millimeters shape tip, Extra Broad can make a 16 millimeters 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