These refills are P900 style ballpoint ink refills. The extender on the back of the refill will allow this refill to be used in most capped rollerball pens. Removing this “extender” will allow this refill to fit any pen that takes a P900/Parker Style BP or Gel refill.
Ballpoint & Gel Refills
P900BP Parker Style Black Ballpoint Ink with Extender/Fits Rollerball Pens by Acme Studio®_will convert your RB to use ballpoint ink
$8.50 $6.80
parker style ballpoint refills with extender to fit rollerball pens
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