These great gel ink refills fit all of the kits that use Parker style refills. Like all gel refills they use more ink and the pen should not be left for extended periods of time between uses. I've been able to use them after a month or two of non-use, but you can't go for 6-12 months+ without using the pen. This variety pack comes with one each of the black, blue, red, orange, and yellow gel ink refills. Made in Taiwan