on salePilot CON-40 Piston Converter

Product Code PN69810

In Stock

out of stock

on salePilot CON-40 Piston Converter

Product Code PN69810

In Stock

out of stock


Piston-style twist converter. Fits all current Pilot and Namiki pens. Four small metal agitators inside the barrel help break up air bubbles to keep a steady flow of ink.

Max Ink Capacity - Converter

The maximum volume of ink that can fit in the pen when using a converter.


Customer Reviews

Based on 117 reviews

So far so good. I’ve filled it and cleaned it a few times and it’s been easy and straightforward. I did take the advice I found on Goulet’s YouTube video to help get the most ink in and it worked like a charm.


Carefully packaged, arrived when expected, works perfectly with the Pilot Metropolitan pen.

Maureen L.
Decent converter, wish it was bigger.

My Pilot Metropolitan came with a squeeze converter that just made a mess, so I thought I'd give this a tet, and I'm glad I did. Works pretty well, but I recommend you watch Brian's video with tips for getting a full fill.

Nick S.
Works fine

I don't really understand the hate with these. They have nice agitator bbs, the action is smooth and they aren't very expensive. Watch the Goulet video and load yours up. I've had zero problems with this converter.

Do Yourself a Favor and Watch Their Video!

I can understand why this converter could be frustrating to some. It doesn't hold a lot of ink and if it doesn't fill all the way, you're limited on how long you can use it before having to fill it up; However, I highly recommend watching GouletPens video with tips and tricks on this converter! It completely changed my perspective for this converter and now it's so easy to fill it to nearly max.

FAQs about Converters

What is a converter? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

A converter is a cartridge-shaped reservoir that allows you to use bottled fountain pen ink, when a cartridge would otherwise be your only option. Fountain pens that have this option are usually referred to as a cartridge/converter pen, or C/C for short.

What pens accept a converter? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

These fountain pens all take a converter. Please check the individual product descriptions for if the pen needs a proprietary or standard converter. 

You can also check out our Cartridge/Converter Compatibility Guide for general brand guidance.

How do I use a converter? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

A converter goes in the place of where the ink cartridge would normally go.

Check out this video to see how to fill and use your converter:

How do I clean a converter pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

You can clean a converter by flushing it out with water, the same way you would use it to fill your pen, but instead of ink you’re just using water or a Pen Flush

Watch this video to see how to clean a cartridge/converter pen:

What's your return policy? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

We accept returns for up to 30 days from purchase. You can read all our Return Policies here.

To initiate a return, please submit a request at the Return Portal. Our Customer Care team might reach out to you for more information.