High quality Faber Castell piston converter for pens that accept International size cartridges, enabling use of bottled ink. This model fits fits the Faber Castell Loom, Basic, Ambition, eMotion and Ondoro fountain pens and other cartridge/converter pens that take International standard (short) and long International size cartridges. If your pen takes cartridges that are 38mm long and tapered towards the nib end then this converter will probably fit. The Faber Castell converter is slightly slimmer than other "standard" converters such as the Pelikan as the metal sleeve does not have a step in it. Overall length 75.5mm, maximum diameter 7.5mm. It will also fit Conway Stewart, Yard-O-Led, Edison, Bexley, Rotring and other models listed on this page
. Faber Castell type number 148785.
Please also note that these converters will not fit the Conway Stewart Dinkie or Yard-O-Led pocket fountain pens as these models have a short barrel and hence are cartridge only. For other pen models, if you are in doubt, check that the barrel has enough space for the converter before fitting into the nib unit.