With two tips in one, these Sharpie Twin Tip permanent markers let you express yourself in any manner you want. Made to write practically everywhere, these exciting markers eliminate dull and boring with their varying nib sizes and shapes. Their intense black ink creates eye-popping, vibrant impressions that are water and fade proof. The resilient ink of these Sharpie Twin Tip permanent markers dries quickly to prevent smudging. Use them in in the classroom, office, home, and beyond to make searching for items quicker and simpler. These pens are AP certified which means that they are an environmentally friendly choice for your stationery supply. The Twin Tip of Sharpie has 2 different tips: the Fine tip has a stroke width of 0.9 mm and the Ultrafine tip has a stroke width of 0.5 mm.