The Pentel Arts Pocket Brush Pen allows you to create fine to broad lines with a single brush stroke. This pen is ideal for painting, cartooning, detailing, drawing and sketching and refillable with permanent pigment ink. The included refill cartridges keep the ink flowing in what is sure to become your favorite pen!Details:SepiaMedium brush tipCreates fine to broad lines with a single strokeIncludes 2 refillsPermanent inkArtist qualityConforms to ASTM D-4236