Kaweco Ballpoint Pen Refill D1 1.0mm (pack of 5) Blue

German brand Kaweco made some of the earliest fountain pens first produced way back in 1911. The Kaweco Sport model is one of their elegantly simple timeless designs that is compact when closed but fits perfectly in the hand when open with its octagonal shape making it extra easy to grip. Still available today including in rollerball or ballpoint versions.