Oil pens combine the advantages of ballpoint and gel pens: 1) ink dries instantly, does not smear, 2) moderate ink consumption, 3) soft writing, does not require pressure on the paper. Oil pens write at low temperatures, from -20C. Delta DB2059 oil pen has a plastic transparent case. Ink color: black. Writing knot 0.7 mm. Writing length: 2,500 m. Without the possibility of replacing the rod.