Marks A Lot Extra-Large Desk-Style Permanent Marker, Extra-Broad Chisel Tip, Black (24148) Durable jumbo chisel tip (5/8") marks in a variety of line widths, from thin to extra wide - great for making signs, posters and banners. Extra-large barrel with generous, long-lasting ink supply. Won't dry out - leave cap off up to 1/2 hour! The ink is low-odor, nontoxic and safe for office, school, or home.