Micro Brush Sign Pen now availableThe sensitive, synthetic tips on Pentel Arts Micro Brush Tip Sign Pens contain individual bristles that create a variety of strokes, from tiny hairlines to wide lines. The precision bristles have excellent spring and snap that mimic the control of a sable paintbrush. Ideal for hand lettering and calligraphy, Micro Brush Tip Sign Pens contain waterbased dye ink that works well in sketchbooks and for small illustrations. They're great for comic book artists and other illustrators who make expressive lines and a range of line widths. They're also excellent for creating drybrush effects.