Pentel hybrid TECHNICA KN103, KN104 hybrid DX K255 Needle point BLN13 These are old models, apparently discontinued. The EnerGel Needlepoint doesn't write. The others can write for now, but I can't guarantee their functionality. The black ink has what looks like air bubbles? I think they also have a slightly old smell. I received these from an acquaintance, and I don't have much knowledge about them, so I'm offering them to someone who can judge them from the photos.