universal fat ballpoint pen can use all kinds of refill —

Founded universal fat ballpoint pen can use all kinds of refill models & stl files for printing
Maglev fan
richmitch
Handgrip
Xx_xX
Can opener knob
zbigu73
Can lid
Jok
Universal T Handle
MakeLikeMike
Pen Holder or Vase
galenogarbe
Rose Pen
Tom Anderson (The ReaL NEO)
Universal Joint
reichwec