Shopping for converters, cleaning & pen cases can come down to a simple mismatch: do you want a cartridge assortment that helps with sizing uncertainty, or a dedicated converter for a specific pen family? The Variety Black pack combines black cartridges in two bore sizes with a gift converter. The CON-40 takes the more focused route as a screw-type converter described for Pilot (Namiki) fountain pens. Start with the pen's intended use case and the format you actually need.
Quick verdict
Choose the Variety Black 20 Fountain Pen Ink Cartridges + Gift Converter if you want cartridges included and would rather have two size choices in one package. Choose the Fountain Pen Ink Converter Screw Type (CON-40) if you need a converter-first format for the Pilot (Namiki) use case described for it. The deciding difference is assortment versus specificity, rather than a shared feature that separates them.
At a glance
| Comparison point | Variety Black 20 Cartridges + Gift Converter | Fountain Pen Ink Converter CON-40 |
|---|---|---|
| Listed price | USD 8.99 | USD 9.95 |
| Package emphasis | Black cartridge assortment plus gift converter | One screw-type converter |
| Use cue | Two cartridge bore sizes | Pilot (Namiki) single-cartridge fountain pen |
Where each product wins
- Variety Black 20 Fountain Pen Ink Cartridges + Gift Converter: The stronger match when your priority is a supply of black cartridges with an extra converter included. Its two-size format directly addresses uncertainty about cartridge bore selection.
- Fountain Pen Ink Converter Screw Type (CON-40): The clearer choice when the Pilot (Namiki) connection and screw-type format are the starting points. It is a focused single-converter purchase rather than a cartridge assortment.
Product notes
Variety Black 20 Fountain Pen Ink Cartridges + Gift Converter
Choose the Variety Black 20 Fountain Pen Ink Cartridges + Gift Converter when the main uncertainty is which of two listed bore sizes suits your fountain pen. The pack divides its 20 black cartridges between 10 at 2.6mm and 10 at 3.4mm, so the assortment lets you address sizing before committing to one bore. A gift fountain pen converter is also included, extending the package beyond cartridges. The limitation is explicit: the gift converter may not fit any of your pens, so treat it as an extra rather than the purchase reason. The package is specifically black, making the ink choice straightforward while keeping the format focused on cartridges. This is the broader supply choice, not a dedicated named-pen converter.
Fountain Pen Ink Converter Screw Type (CON-40)
The Fountain Pen Ink Converter Screw Type (CON-40) makes sense when your priority is a screw-type converter described for a single-cartridge Pilot (Namiki) fountain pen. Its 0.4ml ink capacity and one-piece format give the purchase a focused purpose, while the screw-type mechanism is part of both its name and use description. The limitation is scope: it is one converter, not a cartridge assortment, and its stated use centers on Pilot (Namiki) pens. That makes it a less flexible answer to the two-bore-size question raised by the Variety pack. It also suits a converter-first setup rather than someone primarily seeking a supply of black cartridges. For the named Pilot/Namiki use case, its format is more specific than the gift converter bundled with the Variety pack.
Final choice by use case
- Choose Variety Black 20 Fountain Pen Ink Cartridges + Gift Converter for cartridge-size uncertainty, black ink cartridges, and the convenience of an included gift converter.
- Choose Fountain Pen Ink Converter Screw Type (CON-40) for a Pilot (Namiki) single-cartridge fountain pen where a screw-type converter is the required format.
The Variety pack is the more useful direction when the package contents matter most. The CON-40 is the more targeted direction when the pen family and converter style already match its described use.
