Diplomat Excellence A Plus Bauhaus Rollerball PenDiplomat extends its Excellence A series with a superior version: the Excellence A Plus, which is equipped with a spring loaded clip and a screw on cap. It is here that the end user can choose between two versions of high quality Excellence pens appropriate to their writing habits and needs. With a short rotation of only 1 3 turns, the cap can be easily and silently unscrewed from the barrel. The spring loaded clip is made of solid metal, and the