The snake roll stopper for fountain pen. adjustable around 14 mm +/- 1 mm.
The stopper is slip-on fastening like a finger ring. Please adjust the stopper size to slightly smaller than the pen size then attach to the pen cap or barrel.
WARNING! Please use this product at your own risk. Since you are ordering it directly from Shapeways and attaching it by yourself, I will not take any responsibility if your pen gets damaged by your actions.
Please contact me for other sizes.
Size 15 mm is here