Flexible brush tips allow easy transition from thick to thin lines by changing pen pressure. Water-based pigment ink allows rich vibrant colors that won't bleed through most papers. Great for beginner brush calligraphy, hand lettering, and illustration. Non-refillable. Contains 10 hard tip Fudenosuke Brush Pens. Colors include: Black, Gray, Red, Orange, Yellow, Green, Blue, Purple, Pink, and Brown.