The Lamy Swift is a rollerball that dispenses with the need for a cap, offering the smooth ink flow of a roller with the convenience of a ballpoint. A click mechanism reveals the writing tip, which in turn retracts the clip for greater writing comfort by becoming flush against the barrel. When the rollerball is retracted, the clip is raised so the pen can be clipped onto a jacket pocket. A long barrel means a good number of characters can be engraved (40). Takes Lamy M66 rollerball refills .