FINE LINE 30 COLOR PEN SET (0.4mm Tip)Color, draw, and write in 30 vibrant colors with this artist's quality marker set! 30 fine line markers. Sturdy 0. 4 mm fiber marker tips give an expressive line but retain their points even with heavy use. Great for detailed coloring, drawing, color coded note taking, and more. Rich, brightly colored water based ink. Hexagonal barrels won't roll away. Storage case measures 10 inches wide by 7 3 4'' high x 6 1 2'' deep.