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FK One Adjust Wireless Tattoo Machine
Built to Adapt, Engineered to Perform Tattoo without limits using the FK One Adjust. Built to handle any style or technique, this machine lets you adjust your stroke on the fly—no...
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Built to Adapt, Engineered to Perform
Tattoo without limits using the FK One Adjust. Built to handle any style or technique, this machine lets you adjust your stroke on the fly—no need to power down, swap machines, or change cams mid-session. One setup does it all, and it’s all right there for you.
Get all-day wireless performance with two swap-and-go rechargeable batteries. The large battery delivers up to 6.5 hours of runtime, and the small battery up to 5.5 hours, depending on your settings. A dual-slot charger keeps one battery ready while you work.
The upgraded digital display gives you a clear readout of your voltage or hertz—your choice. Hertz provide a more accurate view of your machine’s performance, showing needle frequency per second.
Designed with artists in mind, the FK One Adjust is reliable, durable, and built to last. It’s artist-tested and made specifically to handle whatever you throw at it and meet your daily needs in the shop. Backed by FK’s global service program, FK One Adjust keeps up with you—session after session.
- Machine Size: 152mm x 38mm
- Weight with Battery: 244g (8.6oz) w/ 18500A Battery / 268g (9.5oz) w/ 18650A Battery
- Features patent-pending adjustable stroke technology (adjust your stroke without powering down)
- Upgraded digital display screen: shows power output in volts or hertz according to your preference
- Stroke Range: 2.0mm up to 5.0mm
- Equipped with an ergonomic grip for maximum comfort
- Compatible with other FK Irons modular grips
- Features a brushed motor
- Output Voltage: 5V–12V
- Increment/Decrement Voltage Interval: 0.5V or 0.2V
- Maximum Output Current: 1A
- Comes with two drop-in, rechargeable Panasonic batteries + 2 caps
- 18500A Battery Life: ~5.5 Hours (dependent on settings + operating parameters)
- 18650 Battery Life: ~6.5 Hours (dependent on settings + operating parameters)
- 18500A Battery uses shorter cap → 0.25” depth
- 18650A Battery uses longer cap → 0.75" depth
Resources:
User ManualOpens a new window
BUILT TO ADAPT, ENGINEERED TO PERFORM
BUILT TO ADAPT,
ENGINEERED TO PERFORM


Built to adapt across styles and setups. Its patent-pending adjustable stroke system
lets you shift from lining to shading to packing in seconds, working seamlessly on its
own or as the most flexible companion in your FK Irons lineup.
Built to adapt across styles and setups. Its patent-
pending adjustable stroke system lets you shift
from lining to shading to packing in seconds, working
seamlessly on its own or as the most flexible
companion in your FK Irons lineup.
THE FK STANDARD, REDEFINED
THE FK STANDARD,REDEFINED
HOW FK ONE ADJUST CHANGES THE GAME

ARTIST-FIRST DESIGN
FK One Adjust was crafted with artist feedback at every
stage, ensuring it meets your session needs—
day in, day out.
FK One Adjust was crafted with artist feedback at every
stage, ensuring it meets your session needs—day in, day out.
INNOVATION THAT DELIVERS
The patent-pending stroke adjustment shifts instantly in 0.5mm
increments from 2.0mm to 5.0mm without ever having to power
off the machine.
The patent-pending stroke adjustment shifts instantly in 0.5mm
increments from 2.0mm to 5.0mm without ever having to
power off the machine.

VERSATILITY
From delicate fine lines to bold color packing, tackle any style without ever swapping machines.
From delicate fine lines to bold color packing, tackle any style
without ever swapping machines.
IT’S TIME FOR YOU TO EXPERIENCE THE FK ONE ADJUST.
BUILT FOR
ARTISTS WHO:
Need one machine for lining, shading,
and packing
Adjust on the fly mid-session without losing focus
Travel light to conventions or guest spots
Expect unmatched durability and top-tier performance
THE REVIEWS OF THE FK ONE ADJUST ARE IN
THE REVIEWS OF THE
FK ONE ADJUST ARE IN
“Definitely the FK One Adjust is not only one of the best machines I’ve ever worked with, but I’m convinced it has the potential to set a new standard in the industry…. I’m honored to be a part of it. Thank you for the trust and for listening to the artists opinion.”
- Yomico Moreno
“The new FK One Adjust is the machine that I have been waiting for. Stroke adjustment is incredibly crucial for tailoring my tattoo machine to my clients individual skin as well as my full color saturation style.”
– Koral Ladna
ANY PROJECT. ANY SESSION.
FK ONE ADJUST IS BUILT TO WORK AS HARD AS YOU DO.
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