K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
K-OS Pen
aroundsquare

K-OS Pen

Regular price $10.00 $110.00
Shipping calculated at checkout.

 

K-OS Pen

Update: Pen clips now available. Our snap on K-OS Clip is available at this listing!

The K-OS machined pen is the self-proclaimed King of Scribble. It is the result of a considerable effort to design and manufacture a completely minimalist, yet highly functional pen, that would serve reliably for quick notes as well as long-form writing, and under any writing conditions. The design dates back to 2017, but it took nearly three years to dial in the design specs and production processes to a point where we were fully satisfied.  

The pen design has the same clean, minimalist aesthetics that Aroundsquare has become known for.. a stark contrast to tactile aesthetics of many EDC pens. But don’t let the good looks fool you. These little beauties were designed to provide the writing experience of a full-sized pen in a compact, pocket friendly form factor. The KoS pen is 1cm in diameter, and measures roughly 10cm from refill tip to end—enough to rest comfortably in most hands, and bumps up to around 11.5cm with the cap posted. 

The pen assembly includes a slot-end set screw to securely hold the ink refill in place (no screw driver included). The included set screws match the material of the pen. Spare stainless steel set screws are available in the drop down. 

The K-OS pens are precision machined and polished just enough to give em that fresh new pen look, but not so much that you'll be intimidated from throwing them in your pocket with your keys. They are laser etched with a subtle AROUNDSQUARE word mark. The pens are available in five materials, and all are completely raw and untreated. The copper and brass, in particular, will begin to patina almost immediately, and will take on a personalized tone with age. 

The pens ship with a Fisher Space Pen pressurized ball-point refill. While there are lots of great refills out there, the FSP’s are pretty much undisputed as the most reliable option available in this category. They don't dry out, and write without skipping on pretty much any type of paper. 

Options as follows:

  • Ultem: 11.5g with refill (*see note below)
  • Titanium: 31g with refill
  • Copper: 59g with refill
  • Brass: 56g with refill
  • Stainless Steel: 53g with refill
  • Aluminum: 20g with refill (available in natural or fade anodized finish)
  • Delrin: 12g with refill (six colours available)
  • REFILL OPTIONS: medium or fine/ blue or black.
    • PLEASE SPECIFY PREFERENCE IN ORDER NOTES (or we will choose for you)

Note on the Ultem K-OS pens: The Ultem version of the pen is transparent, and the internals will be visible, including the ink cartridge and all internal drilling, milling, and threading. Note that the interior of the pens cannot be polished, so all of the internal work has a frosted machine finish look to it, and spiral drill patterns may be visible. This is part of the beauty of working in a transparent material, and the effect is most apparent with the polished versions, since the exterior polish makes the rest of the body clear.

Customer Reviews

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M
Melinda Lopez
Absolutely perfect!!

Ultem is the lighest, strongest and most resistant to wear versus substandard plastic pens from competitors that claim to be the same. But there is no comparison when it comes to Aroundsquare’s products or their exquisite attention to detail. While they aren’t the first company to offer ultem pens, they are the first to perfect it!!

t
thomas
smooth amber writer

I was delightfully surprised by the weight of this pen, feels just right while writing. And it writes so smooth! The transparency and amber tones elevate this pen to a fine EDC, Great Job Matt, once again, quality reigns supreme! Thank You!

F
Fuerchtelferd
King Of Scribble

It is impossible for me to describe the titanium King Of Scribble with words to someone never touched him/her/it before.
Furthermore it is impossible for me to describe how deeply I love my very own titanium K-OS and how this love grows every single day.

S
Steph

This is the most gorgeous pen I’ve ever had. I love the minimalist esthetic, I love the weight in the hand, I love the color of copper and how it develops a unique character with patina. Thank you Aroundsquare for releasing such amazing pieces!

M
M.F.

The weight is perfect - superbly machined!