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Home Fifty4T - Pocket GT Grade 5 Titanium
Fifty4TSKU: 5040PTI

Fifty4T - Pocket GT Grade 5 Titanium

€150,00 /
Tax not included. Shipping calculated at checkout.
5.0 (4 reviews)
Nib: Steel
Nib Size: Extra Fine
Fifty4T - Pocket GT Grade 5 Titanium
€150,00 /
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, brushed finish highlights its unique dovetail integration, creating a sleek profile and robust functionality. The cap, body and the section are machined from raw Grade 5 Titanium with an even texture and left uncoated and untreated. 

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, 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: Silver
- body material: Grade 5 Titanium
- 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: Silver 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): 48 grams.
- body weight: 25 grams.
- cap weight: 23 grams.

Specifications

Brand: Fifty4T
Model: Pocket GT
Edition:
Color: Silver
Body Material: Metal
Finish:

Cap Type:
Screw
Filling Mechanism:
Cartridge Only
Postable:
Yes
Trim Color: Silver
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: 48 g
Body Weight: 25 g

Customer Reviews

Based on 4 reviews
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G
George Dornan
Fifty4T Pocket GT Titanium

Great pen. Love the Titanium, writes great, a tad heavier than expected but comfortable. Attachment of the clip is quite ingenious, if only we could have this clip on the Quarks (Message to Ben)

L
Luther Robinson, III
Amazing - I love my pens

Dear Pen Venture,

Dear Emy,

I would like to thank you personally for the professional and quick service I have received from your company. I am the proud owner of at least 16 pens purchased with you and all, everyone of those purchase experiences have been excellent. I want to also thank you for joining up with Gravitas Pens and having them be available thru your company. All I can say is that I am a very happy customer and plan on continuing to be one.

Best,

Luther T. Robinson, III
Ginkgo Farms, LLC
ADK Pen Pals Plus

L
Luther

Amazing, I am really happy with my purchase and with Pen Venture. Keep up the good work.

F
Frank Nowicki Washington D.C.
Great pocket pen!

As an owner of a Fifty 4T Titan pen with an excellent writing experience I decided to purchase the Fifty 4T pocket pen. It arrived expeditiously thru DHL express. I ordered the titanium model and was immediately impressed with the weight, design and construction. I inked the pen with a Kaweco mini cartridge from a collection of 10 color choices. In addition, I ordered a Kaweco mini piston used for the Kaweco sport pen and was happy to find that with a slight manipulation it fit. The writing experience was surprisingly smooth with just minimal feedback…which I like. The Fifty 4T pocket pen is definitely a well designed and constructed instrument that makes a great companion for the other pen offerings from this company. I highly recommend this very well made and designed writing instrument. A shout out to Ray & Leah who I had the pleasure of meeting at the DC Super Show!

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© 2026 Pen Venture - Passion Virtuous,

Review picture
Destiny Smith
If the Monster and the Vac 1.0 had a Love Child...

...this would be it! To be completely honest, the Monster's DNA is clearly the dominant factor in this creation! As a matter of fact, it might be more accurate to call this pen the Baby Monster, instead of "Vac 2.0". There are only a few characteristics of the Vac 1.0 that were passed on, such as having an Ultem ink window on the secondary ink reservoir. Speaking of which, shouldn't the "Primary" ink reservoir be the one that connects directly to the nib unit? The back up, or reserve reservoir should be the "Secondary" reservoir, since it feeds the primary reservoir, not the nib unit, but...whatever. Other characteristics inherited from the Vac 1.0 are the conical finials on the cap and barrel, as well as a #6 size nib. Ink capacity of the Vac 2.0 is more than the Vac 1.0, but less than the Monster; at 4.5 ml, it's more than enough to get you through an all night session of writing, maybe even all week!
The nib...unlike other Gravitas nibs, doesn't have a breather hole, and the slit is longer. The metal also may be thinner than other Gravitas #6 nibs, which in combination with the longer slit, may give this nib a bit more flexibility. My nib is very smooth! Ink flow is a little bit less than the Monster's, but more than the Vac 1.0's, and is consistent and predictable with Pelikan 4001 Royal Blue ink.
Fun fact: the ink uptake hole (where ink goes into the pen when you fill it) is located on the underside of the feed, pretty close to where the feed disappears into the grip section. It's like that with almost every fountain pen that's designed to suck ink out of an ink well/bottle. The only one I know of that has the hole way forward toward the tip of the nib is the Lamy 2000. How does that affect you? The farther the nib sticks out from the grip section, the higher up that hole sits from the nib's tip, and the more ink needs to be in the bottom of the ink well to make sure that the pen sucks up ink, not air. The #6 nib sticks out about 7/8" (22mm), the #8 nib (of the Monster) sticks out about 17/16" (27mm). So, unless you plan on transferring your favorite ink into tall, thin ink bottles (like Robert Oster ink bottles), use an ink miser or ink sample bottle, or get creative with an ink syringe, the smaller sized nib of the Vac 2.0 allows you to get more ink out of your bottle before the rest becomes unreachable. With a little patience, practice, and an ample supply of paper towels, you can fill almost any piston filler or vac filler with an ink syringe as if the pen was an eyedropper filler, as long as you can remove the grip section and squirt the ink directly into the barrel. Some pens won't let you remove the grip section, but you can unscrew the nib unit, which will also give you direct access to the ink chamber(s). Vac fillers are more difficult to fill like that, because the piston has to be pushed all the way forward, and then retracted just far enough to allow ink to flow around and behind the piston to fill the ink chamber. If you were to fill it with the piston all the way in the back, you'd just expel all of the ink as soon as you push the piston forward again.
I love that Vac 2.0 has a second ink window, which lets me know when I need to open up the big ink chamber to allow ink to fill the little in chamber. I love the smaller nib, which allows me to better access to ink in bottles that are less than half full. I love how smooth the nib writes, and that the line width is actually pretty close to the nominal "Fine" standard (0.3mm, +/- 0.1mm). I love that the cap and pen body are now mated with titanium threaded parts, with ACME threads, so there isn't the constant feeling of cross threading the Ultem plastic, like every time I put the cap back on my Vac 1.0. I'm still careful whenever I screw the cap on any of my pens, regardless of material or brand, but I'm extra careful with threads on my non metal pens.
So, if like the Vac 1.0, you're going to love Vac 2.0, because I believe all of the Vac 1.0's shortcomings were addressed. If you thought you might like the Monster, but thought it's too big or pricey for you, the Vac 2.0 is the perfect fit. Still more ink capacity than most fountain pens, including many dedicated eyedropper pens, yet almost the same size as a regular full size pen. Robust construction, high quality materials, flawless fit and finish.

Picture shows (from left to right):
Gravitas Sentry in Ultem
Ultemate Vac (Vac 1.0)
Vac 2.0
The Monster

Gravitas - Vac 2.0 Grade 5 Titanium | Machine Finish
★ Reviews

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G
Fifty4T - Pocket GT Grade 5 Titanium
George Dornan
Fifty4T Pocket GT Titanium

Great pen. Love the Titanium, writes great, a tad heavier than expected but comfortable. Attachment of the clip is quite ingenious, if only we could have this clip on the Quarks (Message to Ben)

K
Gravitas - Vac 2.0 Filing System Tool
Keith

Works perfectly. Thank you!

F
Leonardo - Momento Zero Blue Aloha
Franciszek O.
Absolutely Stunning Pen & Customer Service

Right out of the box, the pen is an absolute stunner. Leonardo makes phenomenal writing instruments, but buying one through Pen Venture makes the ownership experience truly elite. Thank you, Emy and the team! This won't be my last Leonardo pen from your shop.

D
Gravitas - Vac 2.0 Grade 5 Titanium | Stone Washed
Dan Shapiro
Another magnificent Gravitas Pen

I love this pen! It writes great, looks great and feels great! Much more convenient for my small hands than the Monster. A terrific buy!

J
Gravitas - Quark Zirconium Stone Washed Pocket Pen | New |
Jamie Rees
The perfect pocket pen!

I'm typically not a pocket pen person, but as a worker in the nuclear industry, the allure of zirconium was too great to resist. I had nothing to worry about, as the pen is perfectly balanced when posted and very similar in feel to my trusty Fisher Space Pen, with slightly more heft.
The extra-fine nib arrived wonderfully tuned with just the right amount of feedback and when eye-droppered, the flow is juicy without being too wet.
Plus, that zing really is unique and worth the price of admission by itself!

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