Faber-Castell Pitt Artists' Brush Pen 12-Color SetThese Faber-Castell Big Brush Artist Pens have four times the ink of their original Pitt brush pens and, as the name implies, a big, strong brush nib. They contain pigment based ink, making them one of the few light-resistant & archival art pens available. These sets, available in an expansive thematic range, are equally a great way to get started in art or an ideal tool for established pros.