<https://www.fountainpennetwork.com/forum/topic/232530-kaigelu-316-accidental-disassembly-photos/#comment-2497706>
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"Hmm. Interesting to see that the pen uses a sleeve. That should mean it's easily possible to fit a Jowo or Bock replacement nib unit.   Thanks for showing this accident.   Regards,   Richard. "
<https://www.fountainpennetwork.com/forum/topic/232530-kaigelu-316-accidental-disassembly-photos/?tab=comments#comment-2522445>