Mark One
Mark One
A minimal, durable, retractable pen.
Couldn't load pickup availability
Looking for ink refills? Get them here.
View full details


































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 metal plated nocks 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. This list from Well-Appointed Desk is quite comprehensive. 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.
The Mark One makes me want to find something, anything to write, while the Panobook has me considering every mark. They’re both incredibly well-considered products and are fun to use as a result.
I bought 1 Mark 1 because I’ve been on a lifelong search for the perfect pen and was captivated by the “click”. I then bought 2 more, a Mark 2 and a pencil. They are the best. The pen refills they use write the best, the weight of the pen is just right and the finish feels great.
I’m carrying my Mark 2 on a trip right now and my only fear is losing it.
I love the simplicity, high quality, and attention to detail. Thank you.
Love this pen. It writes as smooth as any pen I’ve ever owned. It’s sleek and feels good in the hand. I have the copper top because the design just spoke to me. I do wish it had a clip available as it sometimes gets lost in my bag and the steel makes for a heavy, solid pen but overall I would definitely recommend it to anybody.
I just received my Mark one pen and I love it . Having seen the ad with the guy explaining why get an 80.00 pen now I know why . Get one you won’t regret it .