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Home Gravitas - Sentry Raw Stainless Steel
GravitasSKU: GP-FP-SY-SST-11/SI-SN6

Gravitas - Sentry Raw Stainless Steel

€115,00 /
Tax not included. Shipping calculated at checkout.
5.0 (2 reviews)
Nib: Steel
Nib Size: Extra Fine
Gravitas - Sentry Raw Stainless Steel
€115,00 /
Nib: Steel
Nib Size: Extra Fine

 
 
Description

Meet the upgraded Sentry fountain pen, the larger sibling to the entry-level model from gravitas. While slightly weightier than its counterpart, the Sentry maintains a comfortable and user-friendly design, thanks to its weighted section. With triple-start ACME cap threads, the cap effortlessly disengages in just 2.25 turns.

Constructed from 304 stainless steel, the section is black PVD coated and features micro-machined grooves for an enhanced grip. To prevent marks from posting - the cap features a delrin sleeve and the upgraded Sentry series now comes with two o-rings, one on the section and one on the barrel, enhancing the experience while carrying and using the pen - preventing the accidental uncapping or untwisting of the section.

Equipped with a Gravitas-production size 6 steel nib compatible with Jowo No. 6 threads and abs plastic feeder, the Sentry offers versatile writing options, including Extra Fine, Fine, Medium, Broad and Fine Flex.

Enhancing your experience, the Sentry comes with a standard international converter provided with each fountain pen. If a larger ink capacity is needed - the Sentry Stainless Steel is eyedropper friendly.

Elevate your writing journey with the refined craftsmanship of the Sentry fountain pen.

Specifications:

- brand: Gravitas
- type: Fountain Pen
- color: Silver
- body material: Stainless Steel
- 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
- trim: Silver color
- length overall (closed): 147 mm
- length overall (posted): 162 mm
- body length: 138 mm
- cap length: 62 mm
- body diameter: 14 mm
- cap diameter (without clip): 15 mm
- weight (overall): 84,5 grams
- body weight: 56,4 grams
- cap weight: 28,1 grams

Specifications

Brand: Gravitas
Model: Sentry
Edition:
Color: Silver
Body Material: Metal
Finish:

Cap Type:
Screw
Filling Mechanism:
Cartridge Converter
Postable:
Yes
Trim Color:
Length Overall (Closed): 147 mm
Length Overall (Posted): 162 mm
Body Length (Uncapped):
138 mm
Body Diameter: 13.25 mm
Cap Diameter (Without Clip): 15 mm
Weight Overall: 84.5 g
Body Weight: 56.4 g

Customer Reviews

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D
Destiny Smith
The Pen of Steel!

This pen is very unapologetic about itself. This pen, to me, is what the definition of the word “gravitas” should look like. This pen is medium large, long enough for a standard cartridge converter, the #6 nib is just the perfect size for this size pen, and the girth is just right. And best of all, it’s made from stainless steel! That pen will survive long enough to allow you to write the Chronicles of the Apocalypse, using Zombie Blood. But seriously, aside from minor scuffs and scratches, this pen, with proper care and cleaning, will be perfectly serviceable in another 100 years.
The Fine nib on my pen is very smooth, and nib unit has excellent ink flow. If you find that the ink flow is too wet, try changing to a “drier” ink, like Pelikan 4001 Königsblau.
Despite the weight of the pen, I find I can write with this pen for longer periods without fatigue. To me, grip diameter, especially a thin grip diameter, causes hand fatigue much more rapidly than writing with a pen that weighs 56 grams. The all that weight is sitting on the web of my hand between thumb and forefinger, right near the center of balance of the pen.
I’m very happy with the look, feel, and performance of this pen. Would definitely buy again!

C
Clay
Breathtaking Pen

This pen is absolutely fantastic. The textured grip prevents slippage during long writing sessions, which is a huge plus for me since my hands tend to get more moist than others. The sentry has a comfortable weight to it and since it leans on the heavier side, it takes away the wrist pain I get from writing with lighter pens. I haven't experienced any ink leaks during its use/transportation, and after observing the inner workings of the pen, I think it's quite resistant to leakage. The ink cartridge filling process is very easy! My pen shipped from EU to USA and arrived in less than a week with no issues. Very happy with my customer experience with pen-venture.

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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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E
Fifty4T - Titan Forged Carbon Fiber
Efr
Ok

Apreciez penița! Apreciez calitatea! Perfect!

T
Gravitas - Monster Grade 5 Titanium & Acrylic| TiSiNx
Thomas Beitelman
Excellent pen but be CAREFUL

Had the pen for three days and absolutely fell in love with it, it is smooth, writes instantly well, etc. Be careful though, the clip is stiff and wasn't grabbing well to my pocket, and when I bent over, it popped out, hit the floor and the barrel shattered. Very heartbroken.

R
Gravitas - Vac 2.0 Aluminium | Black
Robert

The pen is wonderful- a very smooth writer! Emy from Pen Venture wrote a nice note- I really appreciate this thoughtful touch. The pen came fast, writes great, and the service is excellent-what more could I ask for? Thank you.

M
Gravitas - Vac 2.0 Grade 5 Titanium | Machine Finish
Muhammad
Unmatched Customer Service

I purchased the Titanium Vac 2.0 as soon as it was announced, and I couldn't be happier with my decision. The pen itself is exceptional, but what truly sets the experience apart is the outstanding customer service that Emy and his team provide.

Before shipping, I asked Emy if he could check the nib for me, and he kindly did. The result was one of the best nibs in my collection—perhaps even the very best. It's clear that they genuinely care about delivering a great experience.

Emy also took the time to package everything with great care and included a personal handwritten note, which made the unboxing feel even more special.

Thank you, Emy and the entire team, for your dedication and passion. You don't just make incredible pens—you help share and grow this wonderful hobby with people around the world.

B
Gravitas - Sentry Raw Copper
Bjarni Einarsson

Gravitas - Sentry Raw Copper

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