bolt pen —

Founded bolt pen models & stl files for printing
Knurled M10 Bolt  Nut
mrmechanicen
M24x45 Bolt  Nut
mrmechanicen
Bolt Pen
Akgodfrey24
Pen Holder
Nitro3D
Pen Ladder
Aeronaute
Pen Holder Tube Storage
ZachMakingStuff
Pen made of Safety Pins
Tom Anderson (The ReaL NEO)
Pen holder for desk
Charlie_bean