Pentel CXP plotter pens tubular tip refills

[thingsinherited]

Greetings, I recently bought a bunch of Pentel PLOTTER PENS Tubular tip CXP items. I guess they are refills.

  I can't seem to find any information about that particular style. Do you know if they are outdated or that style is no longer in production?  I have searched Pentel CXP and can't find anything, but my computer skills are not the best.

  Any help or information would be appreciated.