Sailor Hocoro Dip Pen Straight Stria BarrelSailor Hocoro Dip Pens make it very easy for you to write with fountain pen inks without having to worry about cleaning them out or committing to one ink color for a longer period of time. Since the pen only comes with a nib and no feed, the only thing you have to do to switch between ink colors is dip in some water and wipe off with a cloth. This is the Hocoro Dip Pen Barrel Straight Stria, a part that makes it easier and more convenient to use