When shopping for converters, cleaning & pen cases, the key decision is whether you need a specific replacement for one fountain pen or a small refill setup with extra hardware. The Fountain Pen Ink Converter Screw Type (CON-40 and the Set of 2 Monteverde Mini Fountain Pen Converter+ refill Syringe/Converter-2.6mm are close in price, but they serve different buying goals. Match the converter format to your pen first, then decide whether a second converter and syringe-assisted refill role are useful.
Quick verdict
Choose the Fountain Pen Ink Converter Screw Type (CON-40 when the named Pilot (Namiki) single-cartridge use and screw-type format are the priority. Choose the Set of 2 Monteverde Mini Fountain Pen Converters when you want a set with an added piston syringe converter. The CON-40 is the focused single-item purchase, while the Monteverde set is built around a broader refill arrangement. Neither is an automatic winner; the right pick depends on whether you need a specific converter or extra refill hardware.
At a glance
| Product | Listed price | Format |
|---|---|---|
| Fountain Pen Ink Converter Screw Type (CON-40 | $9.95 | One piece; CON-40 format |
| Set of 2 Monteverde Mini Fountain Pen Converters | $11.95 | Set of 2; mini format |
The absolute listed-price difference is $2.00.
Where each product wins
Where the CON-40 wins
Its clearest advantage is the stated Pilot (Namiki) single-cartridge use. If that description matches your pen, the screw-type wording gives you a direct purchasing brief instead of asking you to choose among several refill components.
Where Monteverde wins
The Monteverde set wins when a refill tool matters alongside the converters. Its piston syringe can refill the mini converters or work as a standard converter, giving the set an explicit second role. The stated 2.6mm bore is described as standard for most fountain pens, so that number is useful to consider without treating it as inherently better.
Product notes
Fountain Pen Ink Converter Screw Type (CON-40
This is a focused choice for shoppers who want the 0.4ml ink reference associated with a single converter. The listed 2.8 x 0.3 x 0.3-inch dimensions give a precise physical specification, useful when matching a replacement to an existing setup. Its clearest limitation is quantity: the package contains one piece, so it does not offer the additional converter included in the Monteverde package. At $9.95, it also makes the lower-priced purchase, but that should be secondary to whether the CON-40 format is the one your pen calls for. Choose it for a specific, single-converter task; choose the Monteverde set when a refill accessory is part of the brief.
Set of 2 Monteverde Mini Fountain Pen Converters
The useful reason to choose this set is the stated 2.6mm bore, described as standard for most fountain pens, giving you a concrete format detail to weigh. Its limitation is the higher listed price: $11.95 is $2 above the CON-40. This package makes the most sense when its set format and refill-tool arrangement are wanted, rather than when a single converter is all you need. The title specifies mini converters, so that size wording should remain part of the decision. Pick it for the refill setup described here; choose the CON-40 when the named CON-40 format is the priority.
Final choice by use case
- Choose Fountain Pen Ink Converter Screw Type (CON-40 for a single-cartridge Pilot (Namiki) pen and the screw-type CON-40 use described for it.
- Choose Set of 2 Monteverde Mini Fountain Pen Converters when you want the piston syringe's refill role alongside the converter set.
- If you are undecided: use the format match as the tie-breaker. The first is the focused named-use converter; the second is the set built around extra refill hardware.
