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
    • Special Ink
    • Other Accessories
  • New Arrivals
  • Gift Sets
  • Bottom Shelf
  • Pages
    • About Us
    • Terms of Service
    • Shipping Policy
    • Refund Policy
Home Gravitas - Monster Grade 5 Titanium & Ultem | Machined Finish
GravitasSKU: GP-FP-MO-G5TI-11/SI-SN8

Gravitas - Monster Grade 5 Titanium & Ultem | Machined Finish

€390,00 /
Tax not included. Shipping calculated at checkout.
4.75 (4 reviews)
Nib: Steel #8
Nib Size: Extra Fine
Gravitas - Monster Grade 5 Titanium & Ultem | Machined Finish
€390,00 /
Nib: Steel #8
Nib Size: Extra Fine

 
 
Description

Precision Engineering. Radical Innovation. Timeless Design. The Monster

Don't be misled by the name, The Monster is not an oversized fountain pen. It’s a thoughtfully crafted writing instrument, inspired by the classic Gravitas Vac silhouette and refined with modern engineering. Every curve, every proportion has been carefully considered to create a fountain pen that feels bold yet perfectly balanced in the hand.

Disclaimer ! - the combination of the sleek finish and the lack of the clip makes this pen to easy roll off the table/desk or slip off the pocket while in carry, the result of such unfortunate events can be a pen barrel cracked and/or split where the clear acrylic meets the aluminium section threads. Such unfortunate accidents are not covered by warranty !

Machined from solid Grade 5 Titanium and paired with an Ultem barrel, the Monster delivers a writing experience that is both substantial and effortless. Its weight have been optimised and increased from the Aluminium version, offering a solid feeling and comfort without compromise. The Machined finish is obtained by a precision "one pass" process on the lathe - leaving the exposed raw metal to be shiny just like it's polished. The cap is featuring a inner Delrin sleeve which allows for a smooth posting and a smooth feel in capping and uncapping - aiding in the sealing of the nib inside the cap.

At the core of The Monster lies the Kraken Filling System, a revolutionary filling mechanism born from a surprising source: medical device research. While developing retractable pens,  Ben Walsh the lead designer of Gravitas explored shut-off valves and sealing solutions used in mechanical devices - heart valves. The result? A precision-engineered system that offers reliable and efficient operation, vacuum integrity and a unique tactile experience that sets it apart from traditional vacumatic filling systems.

When installed in The Monster - Kraken Filling System brings a huge ink volume of 7ml of ink at full load (full Namiki Emperor ink load - 6ml ink) and an outstanding vacuum integrity due to the use of specialised quad ring* (*a two contact point square ring which maintains a lubricant in between contact points ensuring constant lubricant delivery each time when used) translating in a efficient suction of ink with even one plunge.

The writing point of The Monster is a steel size 8 nib paired with an ebonite feeder - available in 4 sizes : Extra Fine, Fine, Medium and Broad. 

Monster is more than a writing instrument. It’s innovation you can feel, in every detail, every line, every word you write.

Specifications:

- brand: Gravitas
- type: Fountain Pen
- color: Silver & Yellow
- body material: Grade 5 Titanium / Ultem
- cap type: Screw-cap
- filling mechanism: Kraken Filler (Vac type system)
- nib material: Steel
- nib size: Extra Fine, Fine, Medium, Broad
- postable: Yes
- trim: Silver 
- length overall (closed): 147 mm
- length overall (posted): 182 mm
- body length: 143 mm
- cap length: 70 mm
- body diameter: 16 mm
- cap diameter (without clip): 17 mm
- weight (overall): 57 grams
- body weight: 34 grams
- cap weight: 23 grams

Specifications

Brand: Gravitas
Model: Monster
Edition: Regular
Color: Silver and Yellow
Body Material: Metal and Ultem
Finish:

Cap Type:
Screw
Filling Mechanism:
Hybrid
Postable:
Yes
Trim Color: Silver
Length Overall (Closed): 147 mm
Length Overall (Posted): 182 mm
Body Length (Uncapped):
143 mm
Body Diameter: 16 mm
Cap Diameter (Without Clip): 17 mm
Weight Overall: 57 g
Body Weight: 34 g

Customer Reviews

Based on 4 reviews
Write a review
75%
(3)
25%
(1)
0%
(0)
0%
(0)
0%
(0)
D
Destiny Smith
An Amazing Pen

A vacuum filler pen with the ink capacity of an eyedropper filler!
I like pens with large ink reservoirs, because more is better, especially if I'm away from my ink stash. Eyedropper fillers offer the highest ink capacity, but...if you don't have a way to shut off ink flow between reservoir and nib unit, you run into "burping" issues, which can get very messy, especially if you can't see if there's ink in the cap. The solution was either a vac filler, or a "Japanese eyedropper", both of which have a plug attached to a rod that can be screwed into the opening between ink chamber and nib unit, sealing it off. My Opus 88 and Visconti Homo Sapiens have a total ink capacity of around 3.5ml. The Monster G5 has an ink capacity of 7ml. That's like 10 Standard International Short cartridges! That means most casual users might fill their Monster 2-3 times per year. Using a Fine nib, one complete fill lets you write 450 A4 pages, or about 54,000 words. Hopefully, you REALLY LOVE the ink you filled it with, because you'll be looking at that ink for a long, long time!
But not only is the ink capacity huge, the pen itself is pretty amazing, as well. The Kraken filling system, a clever variety of a vac filler system (with an improved shut off valve) that prioritizes ink capacity, is virtually unparalleled in modern pens currently on the market. The Ultem (or clear Acrylic) body of the pen is polished to crystal clarity, the metal is highly corrosion resistant titanium, and the #8 steel nib is smooth as glass.
I'm cheap, and boring, so I do most of my fountain pen writing on plain copier paper, which allows the ink to spread out, letting a Fine nib make a line like a Medium nib. I also like to use Pelikan 4001 Königsblau, because I got a good deal on the 1,000ml bottle of ink from my favorite online seller. The combination of cheap(er) paper and ink pairs really well with the Monster's #8 nib and feed; my Fine nib makes a line comparable to a Japanese Medium nib, while keeping the color richly saturated. Using standard European 5mm quad ruled paper, the nib writes thin enough to be perfectly legible. I do have to write a bit slower, though, because the generous ink flow also means longer drying times, and writing too quickly can cause smearing issue. That's a me-problem, not a pen-problem.
The nib itself is stiff, but very smooth, meeting or exceeding the smoothness of all of my JoWo #6 steel nibs. In my opinion, the combination of nib and feed make this one of the best general purpose pens you can buy, because it will work reliably on a wide variety of paper, and a wide variety of inks. As with all demonstrator type pens, avoid "high maintenance" inks, like permanent/document/waterproof inks (and Baystate Blue), because unless you're a professional writer/author, that ink is going to stay in your pen for at least a month, and your pretty clear tank may become stained permanently.

D
Devanshu Sharma
Just amazing!

From the moment I unboxed the pen till now (a week into it) I haven't been able to put it down and neither has the open shown any signs of being overworked or thrown any tantrums. I did a partial fill of the pen with just a single pump of the kraken filling system and to be honest, I am afraid to do a full fill! I have used it for work, for miscellaneous writing and journaling and the ink level has barely moved. The whole one feels like it will outlast an apocalypse and document it well and perhaps without requiring another fill until the apocalypse ends

A
Aaron
Titanium winner

The titanium version of the Monster is a perfectly balanced writer; the aluminum version just felt a little light to me. The nib and feed are perfect and the filling system is super cool. My only issue lies with the finishing on the cap. There's a lot of glue residue on the inside, and around the edges. I've been scraping it off slowly with my fingernail (and I just don't look inside the cap), but it's a little disappointing to see this blemish on such an expensive pen. Otherwise, I'm very happy to have this upgrade.

G
Grant
Impressive Pen

I received the Gravitas Monster G5 Titanium pen with a medium steel nib and have been writing with it for a few days. This pen is very well designed, it certainly has some heft to it due to the titanium material, and wrote straight out of the box with the preferred line width and wetness - I like my pens to be a bit on the juicy side, and this nib and pen design did not disappoint. My preference are gold nibs on fountain pens for their ability to provide flexibility, but am really impressed with the way the steel #8 nib writes on this pen despite its hardness. The ink volume is also impressive, it took 2 attempts to fill the reservoir with ink, much more than standard cartridge or piston systems, and almost equal to an eye dropper system. It will definitely be added to my pen rotation and looking forward to experiment on different ink colours. I guess from the Gravitas pen lineup this pen is considered a monster, however, it is a bit shy in comparison to other pens in my collection specifically the Danitrio's that can demand that title. The pen holder case that came with the pen is very useful not only to store the pen but also a pen case that fits in a brief case when travelling. Thanks to Pen Venture in getting this impressive pen to me in a timely manner. I'd like to try a broad nib on this pen when they are available as well. So far very pleased with the overall pen, that will be shared with my fountain pen colleagues!

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
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

Let customers speak for us

863 reviews
Write a review
92%
(795)
6%
(53)
1%
(6)
1%
(5)
0%
(4)
824
49
A
Tombow - Zoom 727 Ballpoint | Silver - Blue BT
Alexis McKenna
Zoom 727

I was very lucky to find a Zoom 727 with Pen Venture. It’s similar to the iconic 707 but it’s slightly larger form makes it more usable for daily use. It’s none the worse for that and scooped an if Design award in 2004. Bizarrely, it’s discontinued now! Get it while you can from Pen Venture. My thanks to them for their great service.

S
Gravitas - Quark Zirconium Stone Washed Pocket Pen | New |
Scott Y
Quark, xf

Skipped so much I had to replace the nib unit with parts from my storage. Quite disappointing. The cap now screws on, I preferred the slip cap. It's faster. It's working now but I won't be spending any more money on gravitas.

J
Gravitas - Vac 2.0 Aluminium | Black
Jonathan
The Vac 2

The Vac 2 is a refinement of both the Monster and the previous Gravitas vac fillers. This is a very robust, beautifully balanced writer that will bring pleasure to even the most particular purchaser. The filling system holds just the right quantity of ink. Long writing sessions are a breeze without the risk of having ink sit in the pen for extended periods. I have used this pen extensively since it arrived and have found it to be consistent and reliable. The nib is smooth and flows evenly with the lightest of touches. I prefer this pen over the monster because of its size and balance. The Vac 2 becomes an extension of my hand, allowing me to forget its presence and locus entirely, focusing on what I am writing.

A
Gravitas - Vac 2.0 Aluminium | Black
Anousheh

Excellent service. Love the pen. Thank you.
🙏🙏

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.)

123