A traditional cartridge, converter type fountain pen.
The pen, ink cartridge, traditional converter, and a spring converter come all in one, ready for you to use right away.
Cartridges/Converter are standard international sizing.
Nib size: EF, F, M, B, and Stub1.1
A quick no brainer guide in choosing nib sizes in an overly complicated fountain pen world:
If you write small, go with an EF
For the normal writer, F is the most popular
If you tend to lean on a bigger font, M will be perfect
B is for statements!! Sign a check in B, write a header in B, do some coloring/shading in B
Stub nibs are italic in writing style (have a special card or invitation to write?)