Set 4 Happy Sign Pen Brush Pentel Markers The Sign Pen Brush is perfect for all types of calligraphy, including lettering and calligraphy. The Sign Pen Brush has a soft brush tip made of durable nylon. By varying the angle and pressure, you can go from very fine lines to a wider line in the same motion. It has an extra resistant tip and Snap-Fit cap that prevents it from drying out over time. Flexible metal fiber tip. Contains the highest quality water-based permanent pigment ink, which runs smoothly and has a dry time of approximately one minute. The "Happy" set contains four fantasy colors: orange, blue, purple and pink. Made with 81% recycled plastics. Not rechargeable. Brand: Pentel.