Double fluorescent color in one pen, more convenience to use. There is a yellow color in each highlighter with a chisel tip on both ends. Double tip highlighter has a molded narrow chisel tip which allows two line widths. Broad-line for highlighting and Fine-line for underlining details with just a twist of the wrist. Dries quickly and doesn’t bleed through most paper; smear and smudge-free. Barrel color indicates ink color.