MARKER PEN YELLOW FILA TRACT Stroke Pen, the Italian trait, unique and unmistakable. The pen-tip marker with stress-resistant synthetic with water-based ink. Available in 24 different colors. Classics: blue, red, black and green. Colored: light green, yellow, orange, purple, fuchsia, cobalt blue, brown, purple, crimson, pink, sky blue, turquoise green, spring green, canary yellow, red ocher, grayice, gray smoke. Fluorescent yellow, orange, green.