This section holds the Gillott 303 nib in the Pump Pen.
This section is shipped with the Gillott 303 nib in place.
The Gillott 303 nib is identical to the Gillott 303 nib in size and shape. The Gillott 303 is a stiffer version - it is designed more for writing than drawing.
The feed provides a flow of ink or paint to the bottom side of the nib, which relieves you from having to dip the nib or paint the top of the nib with ink or paint.
You can remove the nib when it needs to be cleaned, or you can replace the nib with a new one.