There are three fountain pens and you are purchasing all three. The Sheaffer is a medium nib with bladder fill that seems to draw ink well. The cap for this pen doesn’t have a clip. The Pilot plumix is also medium nib. It takes Pilot cartridges but there is NO ink included. Finally, there is a Yafa fountain pen. I could not find a nib size but it likely a fine or medium. It takes international cartridges but there is NO ink included. I have cleaned all three pens as well as I can with water only. All three pens do write.