KAWECO Piston Filler Sport Fountain Pen - BlackSince its introduction in 1935, the KAWECO Sport series has become one of the most popular pocket friendly fountain pens among both new and longtime users. Don't be fooled by its compact design. The Sport fountain pen features an octagonal cap that helps to transform the pen into a comfortable, full sized pen when posted. For those who require greater ink capacity, the KAWECO Piston Filler Fountain Pen allows for more writing before requiring a