Kaweco Perkeo Rollerball Refills Alternative

Hey everyone. I had my eye on the Kaweco Perkeo Rollerball, but I had a question involving the refills. Would an actual normal sized Pilot G2 refill or Pentel Energel refill work with the pen itself? I could not find much info on it and would really like an opinion, before buying it. I own a Kaweco sport and I know that the refills work with them being trimmed down, but the pen in this case is a lot larger so I wanted to know. Thanks.

I have a green Perkeo roller. The refill is an Euro Rollerball format, so a direct alternative might be the OHTO Ceramic Roller refills. Most modern gel formats like Pilot G2 or Energel will also work but you may need to trim the length slightly.

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Oh really? Huh. I thought no more trimming would be required since the pen is a lot larger than the sport, but I do not mind modifying the refills if needed. The rollerball pen caught my pen in its matt black color!

The keyword is ‘may’. The various gel refills all have little quirks to make life interesting for folks like us.

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Ah. I see. Well, I will have to see if it does once it arrives.