Color Collection by Intensity Fineliner Marker Pen provides vibrant colors and bold, crisp writing. This pen is perfect for writing, doodling and drafting and great for adult coloring. The water-based ink won’t bleed through paper Results could vary based on paper characteristics. Pen Sub-Brand & SKU Line: Intensity Pen Style: Stick Pen Type: Porous Point Pen Refillable Yes/No: No.