Faber-Castell Multi-mark pens with integrated special erasers are not only ideal for permanent marking - they also write reliably on nearly all smooth surfaces, transparencies and even CDs. Depending on the required purpose the pens are available in various permanent and non-permanent ink colours and the widths S, M and F. All Multi-mark inks dry within seconds and leave sharp edges. However, should there be a need to remove some of the marks, the integrated special eraser can even fully erase permanent marks from all smooth surfaces.