Most of our deluxe fountain pens and rollerballs use #6 nibs, the number refers to the width of the nib from shoulder to shoulder, 5 mm or 6 mm.  Some fountain pen users prefer the feel of the larger nib, others perfer smaller.  We believe that the pens with #6 nibs shown here are the smallest possible diameter for the large nib.

As with all of our fountain pens, they can be converted into a rollball.  You pick the point you want; extra fine, fine, medium or broad for a fountain pen, medium or fine for a rollerball.