Skip to content

🚀 Our new website is live - improved and better than ever! More changes are soon to follow!

  • Brands
  • Fountain Pens
  • Pens
  • Pencils
  • Inks
  • Accessories
  • Paper
  • Refills
  • Creative
  • New Arrivals
  • Gift Sets
  • Bottom Shelf
  • Pages
Pen Venture - Passion Virtuous
Spend €800 more for FREE shipping.
FREE shipping will be applied at checkout

Your cart is empty

Continue shopping
0Cart(€0,00)
  • Brands
    • A-C
      • Amodex
      • Aurora
      • Ballograf
      • Blackwing
      • Caran d'Ache
    • D-G
      • Diamine
      • Fifty4T
      • Graphilo
      • Gravitas
    • H-K
      • Iroful
      • Jacques Herbin
      • KUM
    • L-N
      • LAMY
      • Leonardo
      • Life
      • Maruman
      • Masuya Monokaki
      • Montegrappa
      • Namiki
    • O-R
      • Parker
      • Pilot
      • Pineider
      • Platinum
      • Radius
      • Retro 51
      • Rotring
    • S-U
      • Sailor
      • Scribo
      • Scrikss
      • Stipula
      • Taccia
      • Teranishi
      • Tombow
      • Tomoe River
      • Tsubame
    • V-Z
      • Visconti
      • Waterman
  • Fountain Pens
    • All Fountain Pens
    • Entry-Level
    • Mid-Range
    • Premium
    • Pen Venture Exclusive
  • Pens
    • All Pens
    • Ballpoint Pens
    • Rollerball Pens
    • Multi-Function Pen
  • Pencils
    • All Pencils
    • Classic Pencil
    • Mechanical Pencils
    • Pencil Accessories
  • Inks
    • All Inks
    • Inks by Packaging
      • Bottled Inks
      • Ink Cartridges
      • Ink Sets
    • Inks by Characteristics
      • Standard
      • Permanent
      • Sheen
      • Shimmering
  • Accessories
    • All Accessories
    • Spare Nibs
    • Converter
    • Pen Cases
    • Pen Maintenance
    • Cleaning
  • Paper
    • All Paper
    • By Brand
      • Graphilo
      • Iroful
      • Tomoe River
      • Tsubame
      • Masuya Monokaki
      • Life
    • By Type
      • Notebooks
      • Notepads
      • Loose Sheets
      • Memo Pads
      • Blocknotes
      • Envelope
      • Greeting Card
      • Letter Set
      • Letter Pad
    • By Ruling
      • Blank
      • Ruled
      • Dotted
      • Grid
  • Refills
    • Ballpoint Pen Refills
    • Mechanical Pencils Refills
    • Classic Pencil Refills
    • Multi-Function Pen Refills
  • Creative
    • Calligraphy
    • Markers | Liners | Highlighters
    • Special Ink
    • Other Accessories
  • New Arrivals
  • Gift Sets
  • Bottom Shelf
  • Pages
    • About Us
    • Terms of Service
    • Shipping Policy
    • Refund Policy
Home Shop FP Bestsellers Gravitas - Sentry Aluminium Black
GravitasSKU: GP-FP-SY-AL-22/BK-SN6

Gravitas - Sentry Aluminium Black

€115,00 /
Tax not included. Shipping calculated at checkout.
5.0 (2 reviews)
Nib: Steel
Nib Size: Extra Fine
Gravitas - Sentry Aluminium Black
€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 (depending on the material) and bigger than its counterpart, the Sentry maintains a comfortable and user-friendly design, thanks to its weighted section. With triple-start cap ACME threads, the cap effortlessly disengages in just 2.25 turns. The cap now features an inner Delrin sleeve to acomodate a smooth posting motion without leaving marks on the barrel.

Machined from a solid rod of Aluminium, the new Sentry Aluminium is sporting the new 2025 Gravitas finish - Anodised Black with a bead blasting texture, equipped with double o-rings : one at the link in between the section and the body, to ensure a solid connection and prevent the section from untwisting - and one red o-ring at the link in between the cap and the body to ensure air tight seal and prevent the cap from coming off when the pen is carried. 

The 25mm-long section, ranging from 13.25mm to 11.5mm in width, is expertly crafted from 304 stainless steel. Coated in sleek black PVD and adorned with micro-machined grooves, the section ensures a secure grip during every writing session. Equipped with a Gravitas-production size 6 steel nib compatible* with Jowo No. 6 for threads - abs plastic feeder, the Sentry is offered in versatile writing options: Extra Fine, Fine, Medium, Broad and Fine Flex.

*when swapping for a different non Gravitas nib unit you are sole responsible for checking the fitment of the new nib - we are not responsible for any damages that may occur from the use of non gravitas nibs/nib units.

Enhancing your experience, the Sentry comes with a standard international converter provided with each fountain pen.

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

Specifications:

- brand: Gravitas
- type: Fountain Pen
- color: Black
- body material: Aluminium 
- 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): 146 mm
- length overall (posted): 166 mm
- body length: 137 mm
- cap length: 60 mm
- body diameter: 14 mm
- cap diameter (without clip): 15 mm
- weight (overall): 40 grams
- body weight: 30 grams
- cap weight: 10 grams

Specifications

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

Cap Type:
Screw
Filling Mechanism:
Cartridge Converter
Postable:
Yes
Trim Color:
Length Overall (Closed): 147 mm
Length Overall (Posted): 166 mm
Body Length (Uncapped):
138 mm
Body Diameter: 13.25 mm
Cap Diameter (Without Clip): 15 mm
Weight Overall: 40 g
Body Weight: 30 g

Customer Reviews

Based on 2 reviews
Write a review
100%
(2)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
D
Dan Shapiro
New Black Sentry Aluminum is a great pen

The pen opens and closes like a dream, writes superbly, is very well-balanced, and just feels great in the hand with I think a bead-blasted finish. And it's pretty inexpensive. A great find!

E
Emilio Pacheco
A simply elegant pen with a nib tuned to [almost] perfection

This Gravitas pen is as simple and elegant as black pens can be. They are also a joy to write with, not least because Emy (Pen Venture's Wizard) takes great care in shipping a nib tuned to perfection.

Info
  • Contact
  • About Us
  • Terms of Service
  • Privacy Policy
  • Shipping Policy
  • Refund Policy
  • Legal Information
Socials
Newsletter

Subscribe to our newsletter for the latest updates, tips, and offers!

American Express
Apple Pay
Bancontact
Google Pay
iDEAL Wero
Maestro
Mastercard
PayPal
Shop Pay
Union Pay
USDC
Visa

© 2026 Pen Venture - Passion Virtuous,

Review picture
Isaac Leong
My wonderful first Titan pen

Beautiful colour. The nib is smooth and wet. The grip section is textured, I will not worry about writing with it in hot weather. This is my first demonstrator pen, I love watching the ink level drops (very slowly) in the barrel. The package is packed very securely. Thank you staffs at Pen Venture.

Fifty4T - Titan Slim Line Aluminium Emerald Shadow
★ Reviews

Let customers speak for us

877 reviews
Write a review
92%
(808)
6%
(54)
1%
(6)
1%
(5)
0%
(4)
838
49
R
Gravitas - Vac 2.0 Aluminium | Black
Richard L Sherman
Gravitas Vac 2

The construction of the Vac 2 is flawless. The textures of the materials and it's simple lines display an elegant beauty. The large steel nib delivers a pleasant writing experience and also provides a bit of flex.

C
Gravitas - Vac 2.0 Aluminium | Black
Chris

Amazing Pen! Gravitas makes one of the best piston fillers out there. I dont keep the nib and normally use the pen for coustom flex nibs with Jowo #6 compatible nib units. So, i really cant speak on the nib. However, this pen is just built with high quality components. The weight, feel, and overall aesthetics are unmatched. You wont find better at this price point.

R
Platinum - #3776 Century Kaga Maki-e Sansui GT
Robert Moore
Platinum Sansui - Smooth Operator

I recently acquired the Platinum Maki-e Sansui pen in a Medium nib. The Pen Venture team was kind enough to carefully inspect and tune this pen before sending it on to me. Many thanks for that. It writes very smoothly and with a steady flow of ink. The Medium nib is my favorite nib configuration from the Platinum brand. The line width is nice and thin and always writes consistently right of the box. This lovely Maki-e pen was no different. I highly recommend it.

D
Gravitas - Steel Nib Unit Silver | No. 6
David Sumrell
Gravitas #6 extra fine nib

The extra fine nib came tuned to perfection—a joy to write with. Thank you Emy!

J
Gravitas - Vac 2.0 Aluminium | Black
Jimmie
FANTASTIC!

The VAC 2.0 is a great improvement to an already great pen (the original VAC Ultem). The weight and balance are spot on. The cap and the new threads engage without hesitation. No missed closures and the cap has a nice stop when threading back on. It posts securely without issue. Filling with the Kraken system is easy. I got a medium nib and it is smoooooooth. Mine is on par with my 823 medium nib The smoothness, wetness and bounce would make you think it's a gold nib. Line width is slightly narrower than the 823 medium. The pen feels solid and well built. I'm not worried about this one getting knocked around. Overall a great pen. Shipping from Pen-Venture to Colorado was five days! Great pen and service all around!

123