The days of juggling multiple machines are over. The new FK One Adjust is coming soon: it's our latest wireless machine featuring patent-pending stroke adjustment technology that lets you change your stroke mid-session without ever shutting down or powering off. This machine redefines what a tattoo machine can be, and it’s going to change the way you work for the better.
Here’s everything you need to know about it.
Artist-First Design
Every detail of the FK One Adjust was built with one person in mind: you. It’s made using input from top artists who know the real challenges you face every day in the studio: hand and wrist fatigue, session disruptions to swap machines or cams, and machines that just don’t quite hit like an FK. The FK One Adjust solves all of that.
From the ergonomic grip that keeps long sessions comfortable to the seamless compatibility with other FK Irons grips, this machine is designed to feel like an extension of your hand. At just 244–268 grams, depending on your battery choice (see info on battery operation below), the FK One Adjust balances perfectly for effortless control. Consequently, you'll experience less fatigue, more focus, and a smoother tattooing experience from your first line to your final highlight.
And beyond comfort: the adjustable stroke ensures you never have to rely on dedicated machines for different techniques again. It’s engineered to perform consistently with the hard hits you expect from an FK.
Innovation that Delivers
The FK One Adjust introduces patent-pending stroke adjustment technology. With a stroke range from 2.0mm up to 5.0mm, and stroke variability engineered to near-microscopic accuracy, this machine adapts to every technique: lining, shading, packing, or fine detail—without ever shutting down or powering off. No session disruptions. No hiccups. And stroke adjustments in precise 0.5mm increments.
Adjust your stroke on the fly, mid-session, and take on whatever the tattoo in front of you demands. In short, this machine delivers pure, uninterrupted creativity backed by expert, artist-informed engineering.
How to Adjust the Stroke
Using this technology is simple. You’ll see a ring on the battery housing with demarcations for all available stroke lengths. You’ll also see an arrow on the housing. Align that arrow with your desired stroke length, and you’re locked in. And remember: you can make this adjustment on the fly.
Why Go Adjustable?
If you’ve historically relied on swapping machines, the FK One Adjust gives you that same level of intention—but with the freedom to evolve your setup instantly. It preserves the precision of a dedicated machine while unlocking adaptability that keeps your flow uninterrupted. You can count on infinite possibilities without compromising your high standards.
Versatility with NO Limitations
With seven distinct stroke lengths, you can move seamlessly between styles and techniques without compromise. Whether you’re working on a large-scale black and gray back piece or delicate color work, the FK One Adjust adapts instantly. It’s built to be your all-in-one machine, so you can focus entirely on the art.
Engineered for Full Visibility and Control
Many artists gripe about the same thing: inconsistent power and not knowing exactly what their machine is doing. Analog setups leave too much to guesswork, while vague readouts make precision nearly impossible. That frustration ends here.
The FK One Adjust’s upgraded digital display offers real-time voltage readouts for pinpoint accuracy. But it goes further: it also shows your power output in Hertz. Why does that matter? Because Hertz gives you a truer reflection of how the machine is actually running under load, not just the voltage you’ve dialed in. Voltage can fluctuate depending on needle grouping, skin type, or hand speed—but Hertz reveals the machine’s real performance. With both options on-screen, you’ll always know exactly how your machine is hitting, down to the smallest nuance.
This dual readout eliminates guesswork, ensures consistency, and puts you in full command of your setup.
Wireless Performance That Never Quits
Each FK One Adjust comes with two swap-and-go Panasonic batteries: one compact (18500A) for up to 5.5 hours of runtime, and one extended (18650A) for up to 6.5 hours. With the included dual-slot charger, you’ll always have a backup ready, complete with interchangeable caps for a perfect fit. Whether it’s an all-day marathon session or back-to-back appointments, this machine is built to keep up with you.
Top-Quality by FK Irons
Engineered for the demands of daily tattooing, the FK One Adjust has the quality and premium build you expect from any FK machine. It’s durable, reliable, and supported by our unmatched global service network. From studio to convention floor, you can trust it to perform at the highest level, every single time.
Final Word
The FK One Adjust is going to change everything with adaptability, visibility, and performance at a level the industry hasn’t seen before. Built to meet the creative demands of today’s most ambitious artists, it redefines what a single setup can do—and marks a leap forward not only for your workflow, but for tattooing as a whole.
If you’re ready to push boundaries without limits, stay tuned for when this machine drops, and clear space in your top drawer.
