MetMo Brass Pen in the workshop, surrounded by engineering instruments

Why Have We Created MetMo Pen? 

We set out to create the ultimate fidget pen. We were fascinated by the engineered dual-threaded diamond screws that have been used since the start of the century, and the mesmerising effect they give when two nuts can spin in both directions, so we set to work to capture this magic and combine it with a solid writing implement.   

Someone fiddling with the metmo, pen

The Result?

The first functional diamond thread that you can actually buy!

MetMo Brass pen Using one of its nuts to eject the nib

Who's it For?

Made for designers, engineers, thinkers, and tinkerers. Anyone who wants to just take a moment to focus, relieve stress or just play around. Writing an essay by hand (at least that's how we did it back in my day) is taxing on the metacarpus, but MetMo Pen provides instant relief both physically and mentally.

Running over the MetMo Pen with a car, and it still works

Super Hard Wearing

Machined from solid metals with a custom shallow angle thread, MetMo Pen just refuses to stop working. The increased pitch of the threads give them much more root material, making them incredibly strong when pitted against everyday drops and vehicular encounters. 

We've also built in a nice tolerance between the pen and nuts which, coupled with the huge thread engagement, means your MetMo Pen can survive even the most brutal encounters with heavy machinery.

Writing notes with the MetMo Brass pen

A Satisfying Object in More Ways Than One

Straddling the line between tool and toy, MetMo Pen serves perfectly as a quality everyday pen.

German Balls?

More than just a toy, this guy is designed to be a serious writing implement. A specially designed smooth-to-hold tip and a German engineered ballpoint makes this pen a joy to use. We use a traditional oil based ink and the quality of the cartridge ensures no blotting with a smooth line weight from the moment you put pen to paper.

MetMo Brass dual threaded pen on a workbench

Comfort Grip

Machined to a smooth tip, MetMo Pen is made to be comfortable to hold. Through many hours of testing we stripped back the texture just enough so that it gives a premium feel while writing. 

Fiddling with the metmo Brass pen.

Satisfying Tactile Feedback

The machined diamond pattern is more than just a knurled finish and gives instant pressure feedback to relieve those anxious fingers.... it's like a tiny massage for your hands; it sounds odd but it really feels good!

Dual threaded nuts on the workbench for a metmo Pen

Solid Brass Nuts

Two precision machined nuts with a multi-start thread bring this design to life. Fiddle with a motion like no other as these two nuts spin opposite ways but move in the same direction! What!? Weird but so cool!

Writing notes with the MetMo pen

Perfectly Balanced Aluminium and Solid Brass

Precision machined and precisely weighted. MetMo Pen is in line with the finest writing implement you can buy, because we wanted this to be an excellent pen that is a joy to write with. We spent countless hours perfecting this so it feels totally natural to use. 

Close up of the dual thread on the metmo brass pen.

Silky Smooth Ejection

More than just a toy, deez nuts can be used to eject the pen in a silky smooth and satisfying way.  Hold the loader, pull down and watch the magic.

Satisfaction Zone

Simply sliding the nuts open and closed is huuuuuuugely fascinating and can keep you absent-mindedly fiddling for hours, with countless combinations to explore and scratch that satisfaction itch!

Pulling the MetMo Brass pen out of the brass pen case

Brass Case

What pen is complete without a case?

We wanted to create a weighted case unlike any other that shows off the full dual-threaded nature. This is the perfect place to keep the pen looking great, while making a statement and an interesting talking point on your desk.

Get the Brass Case
Machining a MetMo Brass pen on a CNC lathe

Making a MetMo Pen

Each component is precisely formed using state of the art CNC machines. The complex geometry that allows the pen to perform its magic is slowly and precisely machined into the outer profile, one silky smooth thread at a time. The machine is then indexed 45 degrees and another thread is formed. This process is repeated six times.  Once complete, the machine is switched over to create the anti-clockwise threads and the process begins all over again. I'm tired just typing this! 

History of This Simple Mechanical Motion

What's so special about this thread, I hear you ask? Can't you just make it the same way you make a screw? 

Well, the first thing is that diamond screws are not really screws at all! At least not the conventional way we think of screws, like the ones that hold chairs together. They are more akin to the Archimedes screw, that is a profile designed to achieve a specific job. 

Original screwdriver patent, by I.Allard

So, What's the Use of a Diamond Screw? 

The earliest examples of diamond screws in use date back to 1892, where it was applied to a mechanical screwdriver during a period of fierce innovation started by Isaac Allard, and can still be found today. Although it has been heavily refined over the years with extra ratchets and features.

Close up of the MetMo aluminium Pen

More on the Diamond Screw

Another variation of a continuous diamond screw was also invented in 1938 on the oil fields of Texas to handle winding and prevent damage to steel cables that, at the time, were a recent innovation. These are still in use all over the world today, mostly on ships and in industry where these cables are produced. 

Outside of large industry, the double threaded profile does not feature in anything that you can buy due to the expense of manufacture and limited mechanical properties.  

Our take on the mechanical principal has eight starting points, compared with a conventional two, and then stacked on top of each other to miniaturise the diamond pattern, so MetMo Pen is a combination of the diamond screw and a high torque ball screw used in machinery!  

MetMo Brass pen on a writing desk.

So, what's the deal? Why does it cost £139.99?

We always use the best materials we can get our hands on. We've used premium brass, with each part individually machined in a laborious low volume production machine, then every part needs to be set up by hand and slowly cut to ensure the fine tolerances are maintained to make sure each part fits together perfectly. This all adds to the time and expense of making each pen. 

We wanted to create a piece that was less mass-manufactured to allow a more unique design that could really capture the magic of the engineering involved. 

MetMo Pen is only produced in small batches, which helps to maintain quality and ensure our unique designs last a lifetime. 

Attractive, sleek and fully functional. Whether you're fiddling away or jotting down notes, this writing tool is a stress-reliever.

Black 'MEN'S GEAR' logo on a white background

There is a tangible sense of quality to the touch with the MetMo Pen and, quite frankly, courtesy of its innovative design aesthetic, it might just be the most satisfying pen in the world to hold.

Logo of 'The Coolector' with an astronaut graphic on a white background

With its machined metal body (featuring the diamond-shaped dual thread design), the MetMo pen is as visually beautiful as it's tactile...

Yanko Design logo on a white background

Its design is perfect for fidgeters, offering a tactile grip and doubling as a desk toy.

Logo of 'The Awesomer' with a tagline on a white background