Pen Holder for Pen Plotter;

specifically for the Mimaki Plotter

Centers the pen and holds it tight for precision plotting

Two versions:
4mm inside diameter for the muji refill gel ink ballpoint pen

6mm inside diameter for anything else

outside diameter at 8.4mm for the standard mimaki pen holder to hold this penholder

the slit that goes along the model is at 2mm to have the screw of the original penholder squeeze the model,
for a firm grip of the pen :)

length ath 30mm