Mark One
Mark One
A minimal, durable, retractable pen.
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Minimal
It’s literally seamless.
Mark One has a completely seamless design, which was quite an engineering feat. The pen has no excess ornamentation or logo, and comes in several colors. The polished steel knocks provide a nice little accent to each, and give Mark One a sophisticated look without looking overly tactical.


Durable
Made to last a lifetime.
Mark One is incredibly durable. It is made entirely out of metal, including the custom click mechanism. The pen is coated with Cerakote, which is an extremely durable ceramic-polymer coating (technical specifications for Cerakote). It gives the pen a really nice, matte feel. This pen should last a lifetime.


Retractable
A completely custom click mechanism.
There are many off-the-shelf click mechanisms we could have used, but none of them were quite right for what we wanted, so naturally, we made our own. It is made entirely out of metal and, as far as we know, it is the only all-metal mechanism on the market that has an actual “click” action. It is satisfying as heck to click.


Refill
Built for an amazing rollerball refill.
Mark One ships with our favorite refill, the Schmidt P8126 rollerball. This is a fantastic cartridge; the ink flows smoothly and dries quickly. However, Mark One will accept any Parker-style refill, which means there are many options for pen cartridges that our pen will accept. Check out our refill guide for other options, or purchase more refills here.







Specifications
- Dimensions: 128 mm long, 11 mm diameter. (5 in x 0.43 in)
- Weight: Aluminum: 25 grams (0.88 oz). Steel: 48 grams (1.70 oz).
- Aluminum or steel body. Aluminum mechanism. Polished steel knock.
- Cerakote coating, matte finish. See technical specifications for Cerakote.
- Included Refill: Schmidt P8126. Black ink with 0.6mm tip diameter.

No asterisks.
Frequently Asked Questions
What is Cerakote?
Cerakote is an extremely durable ceramic-polymer coating. It creates a matte, super smooth finish that ages beautifully. Learn more about it here.
Is the Mark One pen refillable?
Yes! Mark One will accept any Parker-style refill. We wrote up an extensive guide here. Mark One ships with our favorite refill, the Schmidt P8126 rollerball, and you can purchase more of those here.
What configurations and colors does Mark One come in?
Mark One is available in many colorways, which you can see in the selector at the top of the page. Mark One is also available in two different body materials: aluminum and steel. Steel weights about twice as much as aluminum, so choose that if you prefer a heftier, weightier pen.
How long is the Mark One?
Mark One is 128 mm (~5 inches) long.
What color ink does Mark One come with?
Mark One comes with black ink. You can purchase blue ink here.
Can I personalize the Mark One with engravings or logos?
We don’t offer one-off customizations (see next question), but if you have access to a laser engraver, go wild. The Cerakote will cleanly laser off, revealing the metal body beneath.
Do you offer custom branding for bulk or corporate orders of the Mark One?
Yes we do! We offer customization for the Mark One for orders of 30 units or more. We will guide you through the process of creating a Mark One that is truly custom made for your brand. Perfect for company gifts, resellers, new hire kits, or anyone wanting to make an impression with a thoughtfully designed object. Learn more about our custom program here.
How can I request a repair or replacement for my Mark One?
Send us an email to hello@studioneat.com. We offer a lifetime guarantee and we will fix or replace your pen, or send you parts to repair it yourself.
I don’t recall how I happened upon Studio Neat, but I can tell you how happy I am now that I did! I purchased the Mark One about a month ago now and I couldn’t be happier. Why? Couple reasons. The weight of the pen is perfect. And the satisfying sound it makes when you press the plunger to advance the pen tip is like a satisfying notice that what you about to use the pen for is going to be a sublime experience. You will understand what I mean when you get yours!
Absolutely in love with my new pen everything from the weight to the smooth writing is just perfect.
I love how sturdy and reliable it is because of how well it’s built.
Since receiving, I think I’ve been daily driving this pen for everything at work and home or just making excuses to jot down little notes. Been kicking myself a little bit probably should’ve got it with the clip, but that doesn’t affect that this is just a great writing tool and I’m glad I landed on studio neat after a long search for a pen with all metal design the mark two might even be in my near future
After years of writing almost exclusively digitally, (I have an active Day One Journal streak over 2,500 entries) I recently decided to start creating a physical writing habit for work and graduate school information in order to retain it better and be more present when information is being shared in those contexts. As a result, I wanted a durable pen that would make a statement visually while functionally melting away as I kept up with people talking in meetings or in the classroom. The Mark One absolutely meets that standard and then some! Feels great in the hand, is a stunning color with a seamless design, and replacements are so easy to find even outside of Studio Neat that I know replacing the ink cartridge will be as simple as writing with the pen when the time comes. I've become a believer after one purchase and am now at 4 Studio Neat pens, 2 Keepbooks, and 2 Panobooks for all my physical writing.