Draw or letter with a Principal nib in our Fountain Pen.
Contains one Principal nib and matching feed
Replace the nib when it wears down or snaps - slip out the old and stick in the new
Use other nibs - see the list below
Use any ink or paint, even India ink or acrylic paint
Large capacity cartridge - draw all day and don't worry about running out
Screw-on cap and body prevent leakage
You can double the volume of ink or paint stored in the pen by removing the reservoir and filling the body. The reservoir provides a double wall of guaranteed protection, which might be what you want, but it does reduce your carrying capacity.