This Twin Tip Permanent Marker from Sharpie is a dual tipped marker that features both a fine and an ultra fine tip in just one marker, making it extremely versatile and able to give various levels of detail. Ideal for very detailed drawings with the ability to create exceptionally fine lines making it great for illustrators, designers and even everyday use. The black ink is permanent and will mark the vast majority of surfaces including cardboard, wood, metal, foil, stone, plastic, leather and many more. The ink is quick drying helping to reduce smudging, water resistant and non-toxic - Brand: Sharpie - Dual Tip - Ultra fine & fine tip - Permanent ink - Marks most surfaces from plastic to metal