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Home Fifty4T - Pocket GT Aluminium
Fifty4TSKU: 5040PAL

Fifty4T - Pocket GT Aluminium

€130,00 /
Tax not included. Shipping calculated at checkout.
5.0 (3 reviews)
Nib: Steel
Nib Size: Extra Fine
Fifty4T - Pocket GT Aluminium
€130,00 /
Nib: Steel
Nib Size: Extra Fine

 
 
Description

The Pocket GT is a refined take on the classic pocket pen, crafted for those who appreciate meticulous design and functionality. At its core is the standout s136h steel clip, engineered with precision using wire EDM from stainless steel, heat-treated for durability, and crafted to fit seamlessly at a precise 21-degree angle into the cap. The polished black, brushed finish highlights its unique dovetail integration, creating a sleek profile and robust functionality. The cap, body and the section are machined from 6061-T6 Aluminium and Type 2 hard anodised to a deep black and satin texture.

The cap is sculpted with three facets: one to stabilize the pen on flat surfaces and two that elegantly frame the clip, accentuating its minimalist style. The body is fitted with Quad start threads, offering the flexibility to position the clip just as you like. The posting is done securely with threads and the clip is always aligned with the nib when the posting procedure starts from the aligned point. Each Fifty4T Pocket GT pen is equipped with a screw in size 6 steel nib unit - black color for the Aluminium version, available in the following sizes : Extra Fine, Fine and Medium - powered by a ABS plastic feeder. Fifty4T Pocket GT is threaded to fit* standard JOWO size 6 steel nib units. (*please check for fitment before committing to close the cap - not all JOWO size 6 steel nib units are standard - we are not liable for any damages that may occur in the nib swapping proces - proceed at your own risk).

The Pocket GT model is designed to operate with Standard International Cartridges (small) and it can fit some of the smaller generic converters on the market. The pen doesn't come with a provided converter from the manufacturer. 

Fifty4T is a new brand originating from Ireland that is focused on offering fresh look, deeply rooted in Bauhaus and minimalistic style - choosing to use in its line up high end materials and a keen eye for machining.

Specifications:

- brand: Fifty4T
- type: Fountain Pen
- color: Black
- body material: Aluminium
- cap type: Screw-cap
- filling mechanism: Standard International Cartridge / Converter (not provided)
- nib material: Steel
- nib size: Extra Fine, Fine, Medium
- postable: Yes (screw to post)
- trim: Black color
- length overall (closed): 115 mm.
- length overall (posted): 140 mm.
- body length: 95 mm.
- cap length: 80 mm.
- body diameter: 10 mm.
- cap diameter (without clip): 15 mm.
- weight (overall): 25 grams.
- body weight: 10 grams.
- cap weight: 15 grams.

Specifications

Brand: Fifty4T
Model: Pocket GT
Edition:
Color: Black
Body Material: Metal
Finish:
Satin
Cap Type:
Screw
Filling Mechanism:
Cartridge Only
Postable:
Yes
Trim Color: Black
Length Overall (Closed): 115 mm
Length Overall (Posted): 140 mm
Body Length (Uncapped):
95 mm
Body Diameter: 10 mm
Cap Diameter (Without Clip): 15 mm
Weight Overall: 25 g
Body Weight: 10 g

Customer Reviews

Based on 3 reviews
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D
David Wessel
Pocket GT Aluminum

Solid pen, very well-engineered and balanced. Smooth and stable writer. Love this pen!

J
Jan
High quality and great writer

It's a pretty and functional pocket pen that feels really solid and well made, with an eye-catching, slightly "industrial" style. Like the other review mentioned, similar in size to Kaweco Sport, though quite a bit heavier and more substantial, and with a much bigger (and much better) nib. The nib is smooth, wet, and well defined, and a real pleasure to write with. Posting is nice and secure, and the pen also seems to seal well (even though I didn't run a prolonged test). When posted, it is a very comfortable length - and perhaps a little back-heavy for my liking, but that's of course subjective.

The only downside is that it does not fit a regular converter. It takes standard small cartridges perfectly fine, and you can probably fit it with the new, folding Kaweco converter, but the standard Kaweco converter and similar standard international short converters I have are too long. It is made of hard anodized aluminium and Doodlebud said you can eyedropper it, but I didn't dare to try, so I can't recommend it (normally aluminium is not safe for that). It does have an internal o-ring though.

M
Mike
Great Pocket Pen

This is a really nice, very well made, pocket fountain pen.

I love the all blacked out look with the black nib. Speaking of the nib, it is excellent. I don't know if that is because Emy tuned it before he sent it out or if its because Fifty4T does a really good job on their nibs, but either way its a great nib. Mine is an Extra Fine and it is a nice, smooth writer. I'd say its one of the best Extra Fine nibs I've used since it hits that sweet spot of maintaining a very fine line, yet still having good flow.

The machining on this pen is very well done, as is the finish. The size it right in line with other classic pocket pens like the Kaweco Sport and its various clones. Also very similar in size to the Namisu N2, which is one of my favorite pocket pens. I like this one a little better though because I prefer a screw cap rather than push/pull with O-rings. The screw cap makes it a little slower to deploy and use, but not enough to make a difference in my day-to-day use. Note that my use is sitting at a desk all day rather than carrying this pen in my pocket. If I did carry this pen in my pocket, I would give it its own designated pocket so it didn't get all scratched up, because its too pretty (and expensive) to take damage from keys and such.

The size and shape of the section are nice, allowing you to get a good comfortable purchase on the pen without being large and bulbus (or too short, as is the case with the Kaweco Sport). Without posting the cap, the pen is still large enough to jot down a few quick notes, though you will probably want to post it for extended writing sessions. The 3 machined flats on the cap are subtle, but look nice and do a good job as a roll stop.

This pen is fairly light weight since it is aluminum. I also got the titanium version, and while I haven't had the chance to use it much yet, I have handled it a little bit and I think I'm going to like that version even more. Time will tell.

Highly recommended, and will keep a lookout for other pens from Fifty4T.

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© 2026 Pen Venture - Passion Virtuous,

Review picture
Cosmin R.
A Worthy Sequel to an Awesome Pen

On its own, this pen feels very durable and premium, and the bead-blasted, matte black coated treatment gives it a very “professional” vibe. The Fine nib is bouncy and smooth, very usable on the underside as well (with added feedback, but not scratchy), the ribbed steel grip is very comfortable, the feed holds a lot of ink on its own, and the reservoirs behind it will keep it in writing condition for dozens upon dozens of pages after a fill.

The cap screws open and closed smoothly, with a very satisfying click at the end when closed; it posts deeply, and it also posts securely after being pressed down slightly on the barrel. It is light enough that it does not back-weight the pen significantly when posted.

The barrel construction, along with the newly-implemented Kraken filling system, ensure a significant amount of ink is pulled in from the first try. Much like the main cap, the blind-cap screws open and closed smoothly for refills or ink transfers between reservoirs.

Compared to its predecessor:
Fewer transparent areas overall, but the Vac 2.0’s structure feels more solid than the Ultemate Vac.
The body thickness and thread profiles are different on the Vac 2.0 than on the Ultemate Vac, no mix-and-match potential here.
The matte black coating gives the pen a more refined, premium feel on the metallic parts.
The inner lining of the cap doesn’t get stuck in the barrel thread as often, and when it does, it either slips back into correct position, or it is easier to unscrew and reposition, without the metal thread eating into the cap material.
The coated, no-breather-hole design of the new Gravitas steel nib may not be to everyone’s taste, but I like it a lot, and functionally, this nib feels more bouncy and polished, with smoother writing than its predecessor.
The feed seems to pick up a lot more ink on its own from just a 5-second dip, and the small reservoir behind it looks to have more capacity to back it up before needing to unscrew the blind cap and refill it from the large reservoir.
The Kraken filling system seems to suck up significantly more ink per pump than the mechanism from the Ultemate Vac.

Overall, a very well made fountain pen, and a thorough refinement to an already excellent design. Very satisfied with this purchase!

Gravitas - Vac 2.0 Aluminium | Black
★ Reviews

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A
Gravitas - Vac 2.0 Aluminium | Black
Andreas Andersson
Substantial, reliable, and smooth

The Gravitas Vac 2.0 is an amazing tool for handwriting. The nib is smooth, distinct, and reliable, and it has some weight due to its durable materials, black aluminium/aluminum and ultem, the perfect combination of a tool which will survive most of us, still functioning if the internal vacuum piston system is cared for. I have enjoyed this fountain pen for seven days and I am pleased to say it is one of my better ones, and it is fun to use. I recommend it.

(Emy was correct: The nib has great flow, about six drops of ink will automatically flow from the nib after I have just filled it, after that no problems; tissue paper or the ink bottle under the nib until that happens is recommended, other than that: an excellent fountain pen.)

D
Tombow - Mono Sand 512B | Ink Eraser
Dan Shapiro
Mono sand combo eraser

This is good. It erases well

N
Gravitas - Vac 2.0 Aluminium | Black
Nabil Zouari
FANTASTIC !!!!!

What a fantastic pen—and customized too!

It writes beautifully and arrived surprisingly quickly, even though I’m in Canada. This is my third order from Pen Venture, and once again, the experience has been outstanding. It's always a pleasure to come back.

My Gravitas arrived perfectly tuned and was ready to write straight out of the box. I filled it with Pelikan Royal Blue, and from the very first stroke, it was smooth, consistent, and an absolute joy to use.

I own several excellent fountain pens, including a Pilot Custom 823, a Sailor 1911, and a Leonardo Momento Zero, and I can honestly say that this Gravitas holds its own among them. It is remarkably well made and comes very close to being the perfect writing instrument.

A big thank you to the entire Pen Venture team for the exceptional service, careful tuning, and attention to detail. I’m already looking forward to my next order!

C
Gravitas - Vac 2.0 Aluminium | Black
Cosmin R.
A Worthy Sequel to an Awesome Pen

On its own, this pen feels very durable and premium, and the bead-blasted, matte black coated treatment gives it a very “professional” vibe. The Fine nib is bouncy and smooth, very usable on the underside as well (with added feedback, but not scratchy), the ribbed steel grip is very comfortable, the feed holds a lot of ink on its own, and the reservoirs behind it will keep it in writing condition for dozens upon dozens of pages after a fill.

The cap screws open and closed smoothly, with a very satisfying click at the end when closed; it posts deeply, and it also posts securely after being pressed down slightly on the barrel. It is light enough that it does not back-weight the pen significantly when posted.

The barrel construction, along with the newly-implemented Kraken filling system, ensure a significant amount of ink is pulled in from the first try. Much like the main cap, the blind-cap screws open and closed smoothly for refills or ink transfers between reservoirs.

Compared to its predecessor:
Fewer transparent areas overall, but the Vac 2.0’s structure feels more solid than the Ultemate Vac.
The body thickness and thread profiles are different on the Vac 2.0 than on the Ultemate Vac, no mix-and-match potential here.
The matte black coating gives the pen a more refined, premium feel on the metallic parts.
The inner lining of the cap doesn’t get stuck in the barrel thread as often, and when it does, it either slips back into correct position, or it is easier to unscrew and reposition, without the metal thread eating into the cap material.
The coated, no-breather-hole design of the new Gravitas steel nib may not be to everyone’s taste, but I like it a lot, and functionally, this nib feels more bouncy and polished, with smoother writing than its predecessor.
The feed seems to pick up a lot more ink on its own from just a 5-second dip, and the small reservoir behind it looks to have more capacity to back it up before needing to unscrew the blind cap and refill it from the large reservoir.
The Kraken filling system seems to suck up significantly more ink per pump than the mechanism from the Ultemate Vac.

Overall, a very well made fountain pen, and a thorough refinement to an already excellent design. Very satisfied with this purchase!

User picture User picture
K
Gravitas - Vac 2.0 Aluminium | Black
Keith Schumacker
Great Little Monster

Wow!
Just like the Monster but thinner. For me it is more comfortable for longer writing sessions. The filling system is stellar. Holds lots of ink. As always Ben Walsh and Emy have delivered a innovative and enjoyable writing experience. Can't wait to see what's next. Keep up the wonderful work!

123