Inventery Pocket Fountain Pen and Rollerball with Extender Review and Giveaway

25 July 2018 By ian

A fountain pen, a rollerball, a pocket pen. The Inventery Pocket Pen is all of these, all in a concise brass package.

These pens were sent to me by Inventery for the purposes of this review. These are my own opinions. Read on to see how you can win the black version. The chrome version is doing the rounds of United Inkdom and will be given away there at a later date.

Price: $165 ($135 for version without extender)
Filling method: standard international cartridge/converter
Barrel options: brass, brushed chrome, black
Nib options: rollerball: 0.5mm; extra-fine or fine, chrome or gold plated (black coated available as an option for the black pen)
Size: 10cm long uncapped (13cm with extender), 1cm diameter
Weight: 39g (all versions are made from brass)

This is a pen that comes with several customisation options, all included, very neatly, in the box.

The fountain pen nib can be swapped for a rollerball tip; the pen can be extended; the clip can be removed and replaced with either a blank, a key ring hole, or a stylus. It feels like a little pen kit. It works because all the parts fit together seamlessly. Unlike the Kaweco Supra, the extender is the same size as the cap and barrel and so doesn’t spoil the line of the pen when in place. The options for the cap all fit tightly. With one exception, however you make up your pen, it looks like that’s how the pen was meant to be. The exception is the rollerball unit, which is black plastic. It doesn’t stand out too much on the black pen but is very obvious on the brass and chrome pens.

This is a handsome pen. The finish on all the pens is excellent: very well executed.

Extended, the pen is long enough to be comfortable to use unposted. In the pocket version, you’ll want to post the cap. It screws on to post or close.

The clip is a simple fold of metal. The gap is too wide to hold onto a piece of paper but is fine for holding the pen in a case or pocket.

The nib is from Schmidt and Inventery provide either extra-fine or fine. Chrome or gold plated options are available for all the pens and the black version has a black option too. The nibs on my samples were reliable and had good flow. I find Schmidt nibs tend to be quite stiff. It’s a shame there aren’t more size options.

The rollerball tip is good. Ink flows well, without being gushy, and the tip moves smoothly across the paper. This is the best rollerball I’ve tried that is able to use fountain pen ink.

Talking of ink, you can use standard international cartridges or the supplied converter. The converter won’t fit unless you use the extender.

These are lovely pens to hold and to look at. They are pretty good to write with, especially in the rollerball configuration. The nib is okay but a little pedestrian for a pen in this price range and there should certainly be more width options. There are very many pens available for a similar price. The Inventery pen is a good option if you like metal pens and like the idea of having a pen you can modify to suit any situation. It isn’t cheap, but it’s almost as if you’re getting several pens all in one.


Can be modified in many ways and still look good
Excellent design and manufacture
Rollerball tip is smooth and can use fountain pen inks


Limited nib width options


I’m giving away the black version of this pen, with all the configuration options. To have a chance of winning, simply leave a comment on this post saying thank you to someone you know. The winner will be picked randomly (using

The giveaway finishes at 9am BST on Sunday 5 August 2018. You may enter only once. The giveaway is available worldwide, as long as I’m able to post it to you should you win.