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Home Shop Entry Level Fountain Pens Gravitas - Pocket Delrin White
GravitasSKU: TTP1

Gravitas - Pocket Delrin White

€85,00 / Sold out
Tax not included. Shipping calculated at checkout.
5.0 (3 reviews)
Nib: Steel
Nib Size: Extra Fine
Gravitas - Pocket Delrin White
€85,00 /
Nib: Steel
Nib Size: Extra Fine

 
 
Description

An ultra-portable and robust pocket pen, designed for those on the go. This lightweight fountain pen boasts exceptional durability and user-friendly features, including a Delrin section for effortless handling. Delrin is Polyoxymethylene (PMO) and it combines low-friction and high-wear resistance with the high strength and stiffness such applications require, making it the ideal material to replace metal in designed parts.

The cap of the Pocket, with triple-start threads, smoothly disengages in just 1.5 turns, and one side is expertly machined flat to serve as a practical roll stop. Posting the Pocket makes up for a full size writing instrument when in writing.

The 25mm-long section, ranging from 11.85mm to 9.8mm in width, is crafted from Delrin for optimal weight reduction. Micro-machined grooves enhance grip, ensuring a secure hold, offering a comfortable yet firm stationary grip while writing with the Pocket.

The fountain pen is equipped with a Gravitas-production size 6 steel nib and abs plastic feeder compatible with Jowo No. 6 threads, providing a range of writing options, including Fine flex, Extra Fine, Fine, Medium, and Broad. With every Pocket fountain pen comes included a standard international cartridge converter, if in need of more ink, the Pocket comes with rubber orings in order to be an ideal eyedropper fountain pen, taking advantage of the entire barrel volume for ink.

Elevate your writing experience with this compact and resilient pocket pen.

Specifications:

- brand: Gravitas
- type: Fountain Pen
- color: White
- body material: Delrin
- cap type: Screw-cap
- filling mechanism: Provided Converter / Standard International Cartridge
- nib material: Steel
- nib size: Extra Fine, Fine, Medium, Broad, Fine Flex
- postable: Yes (push to post)
- trim: Silver color 
- length overall (closed): 105 mm.
- length overall (posted): 145 mm.
- body length: 100 mm.
- cap length: 72 mm.
- body diameter: 12 mm.
- cap diameter (without clip): 15 mm.
- weight (overall): 15,5 grams.
- body weight: 9 grams.
- cap weight: 6,5 grams.

Specifications

Brand: Gravitas
Model: Pocket
Edition:
Color: White
Body Material: Delrin
Finish:

Cap Type:
Screw
Filling Mechanism:
Cartridge Converter
Postable:
Yes
Trim Color:
Length Overall (Closed): 105 mm
Length Overall (Posted): 145 mm
Body Length (Uncapped):
100 mm
Body Diameter: 12 mm
Cap Diameter (Without Clip): 15 mm
Weight Overall: 15.5 g
Body Weight: 9 g

Customer Reviews

Based on 3 reviews
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D
Dan Shapiro
A great pocket pen

A wonderful pen - I like the pure white color. Nib can be easily exchanged for different JoWo nib. Can be eye-droppered and can see enough through the Delrin to see if there is sufficient ink. I can't really decide whether I like the Ultem or Delrin more, but the Delrin is more attractive and sinuous to touch. Great shipping and communication with Emy.

G
Gerald Wall
Fantastic Experience with Pen Venture - Love My Gravitas Pocket Pen!

I recently purchased a Gravitas Pocket Pen in Delrin from Pen Venture, and the entire experience was nothing short of excellent. The pen itself is a joy to use—lightweight, comfortable, and durable, with a sleek design that’s perfect for everyday carry.

What really impressed me, though, was the service from Pen Venture. The shipping was incredibly fast, and my pen arrived in perfect condition. I was also pleasantly surprised to find a personal note from Emy included with the order—a thoughtful touch that made the purchase feel special.

Overall, Pen Venture delivered great customer service and a high-quality product, and I wouldn’t hesitate to shop with them again. Highly recommended for anyone in search of unique and well-crafted writing instruments!

User picture
S
Sam Wanjere
Sheer Ecstasy

I received my new pens, and first from Gravitas, less about an hour ago. My love for this brand began with a conversation with Ben Walsh himself in November 2022. I was disappointed to learn he does not ship to my part of the world, Kenya, to be precise in East Africa. However, my love for pens led to me to Pen Venture YouTube page. I decided to check their site and voila! I placed my first two orders. I cannot speak enough about the nondescript package I have received. The service has been excellent and Emil's note a fantastic touch. I have every intention of placing more orders in days to come. Thank you!

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© 2026 Pen Venture - Passion Virtuous,

★ Reviews

Let customers speak for us

883 reviews
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J
Gravitas - Vac 2.0 Grade 5 Titanium | Stone Washed
Juris
<3<3<3

I love this pen. As usual the Gravitas did not disappoint me. Perfect machining, absolutely perfect fit and finish.. this pen is another masterpiece. I love writing with it, I love the materials, and I love how much ink it holds. just pure Gravitas, what else to say.

W
Gravitas - Vac 2.0 Aluminium | Black
W.
Another Great Gravitas Pen

I ordered this pen even though I’ve had some issues with two of my six Monster pens—which amounts to a failure rate of nearly 30%. One of my Monsters (black aluminum) suddenly started leaking after three months of regular use (with Artisan Pastellier Rose Cyclamen ink; it still leaks in small amounts, even though I haven’t used that ink in it for months and am now using the fountain pen with GvFC Viper Green; otherwise, the pen works reliably). Unfortunately, two service requests regarding this issue went unanswered.

The other one (TiSinX titanium) is now, unfortunately, completely unusable, as every time I fill it, large amounts of ink immediately ooze out in thick drops from the same spot (though this could be due to using Diamone Desert Rose—I didn’t initially know that such inks might cause problems). I may contact Pen Venture at a later date regarding the purchase of a replacement ink reservoir (if possible with Ultem).

I haven’t had any problems so far with the Ultem Monsters or the Gravitas Exclusive Rainbow Skittle Monster.

The Vac 2.0, which is what this review was actually supposed to be about, is another great pen. Unfortunately, the Diamine Lady Grey ink I bought along with it seems much too dry for this pen, so I screwed in the gold nib from my Gravitas x Kyuseido Kakari, and now it writes like a dream; ironically, the original nib now writes just as beautifully in my Ultemate Vac - so I guess I have to review the new steel nib separately.

The Kraken filling mechanism works extremely well again and feels almost a bit more powerful in this pen than it does in the Monster; and the new ink window is a joy as well.

It's extremely well balanced and although I very much enjoy the girthier (and heavier) monster, fast note taking is kind of more comfortable with this pen—although, purely for aesthetic reasons, I actually like the flat ends of the Monster a little better.

However, there’s a minor flaw (which definitely isn’t due to the new gold nib, since it also occurred with the original nib) that happens when the ink reservoir is full and you screw the Kraken mechanism shut. Sometimes a large drop falls onto the paper then, but I suspect this can be prevented by simply not letting the reservoir get completely full.

That aside, the pen is a pure delight.

The broad nib I orderd it with is pure delight as well. It's nicely soft and writes very consistently with my (fairly standard, I guess) 50° writing angle. The line width is very consistent, which is a nice experience, given that many broad nibs these days have stub-like characteristics. Interestingly, this nib has this kind of character when using it in reverse for very, very small margin notes—something I haven't come across before with round-ground nibs. I kind of like it.

All in all another great and beautifully designed pen - but only time will tell if it's prone to the same problems as some of the Monsters.

The ordering process and shipment was smooth and seamless as always with pen venture and I received my ordering within just a few days. Emy added a kind handwritten note, a Monster maintenance tool and vial of silicon oil.

That creates a kind of personal shopping experience—which is something, also given that the store appears to be expanding quite rapidly.

User picture User picture
I
Fifty4T - Titan Ultem
IanM
Fifty 4T Titan Ultem - First Impressions

Emy has just sent me the 50/40 Titan Ultem. It’s a very well balanced pen made from a variety of rugged materials. This pen will outlast me, safe to say. The first and continuing impression the pen gives is its superb machining. The fit and finish is of the highest order comparable to artisanal products made in limited numbers by engineer-designers: like musical instruments, pocket knives, tobacco pipes and wristwatches. There is no feature or detail in this pen that distracts from my pleasure in using it. I respond to the common critiques of the 50/40 in the following way: (1) There is no clip. This is true. That this is a shortcoming is not true. I don’t need a clip. My writing surface is flat so it doesn’t roll off and the pen never leaves the studio so I don’t put it in my shirt pocket. (2) The Ultem material is the color of urine. I don’t see it that way. It’s transparent canary and provides a lively contrast to the titanium. If you prefer, the clear and smoked options are also available.(3) The nib should be gold. I disagree. This steel nib is comparable to premium Swedish surgical steel. There’s nuance and flexibility in its response. And the discrete etched logo is the only product marking on the entire pen (with the exception of the pen number out of a series of 250 at the bottom of the cap). (4) It’s too expense. That is an opinion not an argument. I had no problem paying the €640.

G
Gravitas - Pocket Titanium Grade 5
Geoff Goldsmith
Beautiful pocket pen.

I’m really happy with this pen. The machining on the body is really nice and the tactility of the grip is amazing. It also looks lovely.
If I had any criticism it would be that the cap doesn’t post as securely as some pocket pens but once you get used to it is perfectly useable and doesn’t affect my enjoyment of the pen.

S
Gravitas - Monster Aluminium | Black
S
Complete pile of shite

Bought a Gravitas Monster. Kept in pen sleeve in padded case. Used carefully. Treated carefully. Filled twice. Noticed ink all over my hand. No obvious problem. When home I emptied the pen and notice a thin crack in the barrel at the "turning knob" end, just before the aluminium. Now unusable. Ink seeping out. Complete waste of money. Complete crap. Either desire flaw, or poor materials or both. Watch out. Will never buy another Gravitas POS, nor from this retailer again.

123
Review picture
W.
Another Great Gravitas Pen

I ordered this pen even though I’ve had some issues with two of my six Monster pens—which amounts to a failure rate of nearly 30%. One of my Monsters (black aluminum) suddenly started leaking after three months of regular use (with Artisan Pastellier Rose Cyclamen ink; it still leaks in small amounts, even though I haven’t used that ink in it for months and am now using the fountain pen with GvFC Viper Green; otherwise, the pen works reliably). Unfortunately, two service requests regarding this issue went unanswered.

The other one (TiSinX titanium) is now, unfortunately, completely unusable, as every time I fill it, large amounts of ink immediately ooze out in thick drops from the same spot (though this could be due to using Diamone Desert Rose—I didn’t initially know that such inks might cause problems). I may contact Pen Venture at a later date regarding the purchase of a replacement ink reservoir (if possible with Ultem).

I haven’t had any problems so far with the Ultem Monsters or the Gravitas Exclusive Rainbow Skittle Monster.

The Vac 2.0, which is what this review was actually supposed to be about, is another great pen. Unfortunately, the Diamine Lady Grey ink I bought along with it seems much too dry for this pen, so I screwed in the gold nib from my Gravitas x Kyuseido Kakari, and now it writes like a dream; ironically, the original nib now writes just as beautifully in my Ultemate Vac - so I guess I have to review the new steel nib separately.

The Kraken filling mechanism works extremely well again and feels almost a bit more powerful in this pen than it does in the Monster; and the new ink window is a joy as well.

It's extremely well balanced and although I very much enjoy the girthier (and heavier) monster, fast note taking is kind of more comfortable with this pen—although, purely for aesthetic reasons, I actually like the flat ends of the Monster a little better.

However, there’s a minor flaw (which definitely isn’t due to the new gold nib, since it also occurred with the original nib) that happens when the ink reservoir is full and you screw the Kraken mechanism shut. Sometimes a large drop falls onto the paper then, but I suspect this can be prevented by simply not letting the reservoir get completely full.

That aside, the pen is a pure delight.

The broad nib I orderd it with is pure delight as well. It's nicely soft and writes very consistently with my (fairly standard, I guess) 50° writing angle. The line width is very consistent, which is a nice experience, given that many broad nibs these days have stub-like characteristics. Interestingly, this nib has this kind of character when using it in reverse for very, very small margin notes—something I haven't come across before with round-ground nibs. I kind of like it.

All in all another great and beautifully designed pen - but only time will tell if it's prone to the same problems as some of the Monsters.

The ordering process and shipment was smooth and seamless as always with pen venture and I received my ordering within just a few days. Emy added a kind handwritten note, a Monster maintenance tool and vial of silicon oil.

That creates a kind of personal shopping experience—which is something, also given that the store appears to be expanding quite rapidly.

Gravitas - Vac 2.0 Aluminium | Black