Product Description Cocoiro Letter Pens are great for creating your own pen according to your unique style. Choose your favorite pen body and add the refill of your choice for a complete custom pen for writing, lettering, journaling and more. The bodies are sleek in design for ease when writing (ink not included with pen body). The refills feature water-based pigmented ink and are available in colors of extra fine brush tip, and .3mm ballpoint and fine brush tip in black.