BIC Intensity® Fineliner Fine writes like a pen, and is bold like a marker. This pen has bold colors, that won't bleed through paper* (*Results could vary based on paper characteristics). The pen features a fine tip (0.4mm) that provides smooth, colorful precision. The metal nib protects the tip from wearing down. This pen is perfect for notetaking, creative writing, adult coloring, and journaling. The water-based ink makes it perfect for writing on paper and is AMCI approved on toxic.