FK One Adjust Wireless Tattoo Machine - Pick Color

Name: FK One Adjust Wireless Tattoo Machine - Pick Color
Brand: FK Irons
SKU: FK1A-ST
Price: 799.99 USD
Availability: InStock
Rating: 4.8 (5 reviews)

SKU: FK1A-ST

Pro Price $799.99

Single Item

Color: Stealth

Product variants

Quantity:

13 available

Multiple Items

Need a larger amount? Make a quick order.

$799.99

Stealth

FK1A-ST

13 available

$0.00

$799.99

Pop Pink

FK1A-PP

13 available

$0.00

$799.99

Gunmetal

FK1A-GN

67 available

$0.00

Total: $0.00

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Description

Built to Adapt, Engineered to Perform

Enjoy versatility with no limitations when you tattoo with the FK One Adjust. The FK One Adjust is built to adapt to any style, so you can pursue any project for any client. This patent-pending stroke adjustment technology delivers effortless adaptability, so you can tackle any technique on the fly. Easily adjust your stroke mid-session without ever having to power off your machine. One setup handles everything: no need for swapping machines or cams mid-session.

Enjoy nonstop, all-day wireless performance with 2 swap-and-go rechargeable batteries. Each FK One Adjust comes with one large battery for up to 6.5 hours of power, and one small battery for up to 5.5 hours (depending on your settings and operating parameters). This machine also gives you a dual-slot charger, so you can always have a battery powering up and ready to go when you need it.

Get full visibility and control over your performance. The FK One Adjust features an upgraded digital display that gives you a crisp readout of your operating voltage or hertz according to your preference. Why Hertz? Hertz offer a more accurate measurement of your machine’s performance, showing the exact frequency of needle movements per second.

Trust in the FK standard, knowing the FK One Adjust has an artist-first design. This machine was built with artist input and is specifically designed to handle everything you throw at it day after day, session after session, from first line to final pass. It’s reliable, durable, and built to last, supported by FK’s global service program.

HOW THE STROKE ADJUSTMENT WORKS

The FK One Adjust features an innovative custom engine that redefines adaptability. A fixed-stroke cam connects to a precision paddle, while a rotating slider adjusts stroke length by moving closer to or farther from the paddle’s center. This design reduces friction and wear, keeping performance consistent session after session.

A first-of-its-kind system built to keep your flow uninterrupted and your performance unmatched.

Technical Specifications:

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

Battery Specifications:

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

International User ManualOpens a new window

Product Weight: 2.42 lb

Size Table

Standard Body Jewelry Measurements

The following webchart is a quick reference guide for standard body jewelry measurements and how to measure basic body jewelry. Please print this webchart to help measure your body jewelry accurately.

JPG (300 KB)

Visit our PainfulPleasures Infocenter for additional body jewelry information. There, you will find detailed articles on standard body jewelry sizes, how to measure body jewelry, basic body jewelry, and more.

Standard Body Jewelry Threading

Ensure compatibility between standard (non-custom) PainfulPleasures body jewelry parts using the tables below. More information on threading, including custom thread patterns, can be found in our Threading Infocenter article.

Internally threaded jewelry has a threaded post on the top and/or end, which is then inserted into a threaded hole in the barbell shaft.

Internal Thread Patterns by Gauge


Gauge	18g, 16g	14g, 12g	10g–00g
Internal Thread Pattern	0.8mm or 0.9mm	1.2mm	2.0mm

Externally threaded jewelry has a threaded post on the barbell shaft, which is then inserted into a threaded hole in the top and/or end.

External Thread Patterns by Gauge


Gauge	18g, 16g	14g, 12g, 10g
External Thread Pattern	1.2mm	1.6mm

Shipping & Returns

View Shipping & Return Policies

Overall rating: 4.8333335 / 5 from 6 reviews.

AI Generated Review Summary

Summary topics

Review topics: [color, lines, machine, adjustments, investment, shading].

Review highlights

Reviews

Great investment

"Just picked up the FK One Adjust and I’m gonna keep it real this machine is legit. Feels light in the hand and adjustments are versatile. It lines clean, packs color solid, and handles everything I throw at it without hesitation. The adjustability is a game changer… you can dial it in exactly how you like and it just performs. No fighting the machine, no second guessing just smooth, consistent work. I’ve run a lot of machines, and this one stands out. If you’re serious about your craft and want something versatile that actually delivers, this is it. Definitely one of the best investments I’ve made."

— Ali (5/5)

Awesome

"I’ve been using the FK One Adjust for a bit now, and honestly. . it’s one of the more versatile wireless machines I’ve run. The adjustable stroke is a game changer. Being able to adjust the stroke on the fly without switching machines actually makes a difference in workflow. I can line, shade, and pack with the same setup and it never feels like I’m forcing the machine to do something it doesn’t want to do. I am concerned about the battery and how it will hold up. . But so far so good."

— Cory (5/5)

Great

"I’ve been tattooing with the FK One Adjust Wireless for about two months now and I have to say it has the power to do line work and shading really well. My only concern is the quality of the batteries they give you. . it comes with two batteries one small and one bigger. For $800+ I really wish they were better quality. . the charger especially needs to be made better. My opinion is it’s a great machine. The things that come with it need to be set at a higher standard for the amount of money you spend."

— @Shabuttertattoos (4/5)

Well rounded machine

"If you’re looking for a well rounded machine to work with, this is the one. This machine is perfect for bold lines, fine lines, shading and color. Would make a fine addition to any machine drawer."

— Abigail (5/5)

Fk never disappoint

"t’s a super versatile machine perfect for fine lines, shading, and even bold lines and color. It has a strong, reliable motor like every FK model. Definitely a piece you need in your collection."

— Jorge (5/5)

Game changer

"This machine is a game changer. It is super easy to adjust the stroke, and you don't have to power it off to do so. It's so nice not having multiple setups for one tattoo. Really enjoying it so far."

— Lydia B. (5/5)

Q&A

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.

SHOP NOW

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.

BUILT TO OUTLAST

Power through long sessions with up to 12+ hours of
total run-time from two rechargeable, drop-in batteries.

Power through long sessions with up to
12+ hours of total run-time from two
rechargeable, drop-in batteries.

REAL-TIME
CONTROL
Stay precise with a crisp digital
readout that keeps voltage accurate
and visible at all times.
SEAMLESS
PROTECTION
Fully compatible with FK ErgoShield
Grips, which reduce setup time to 10
seconds flat while delivering
maximum hygiene.
ENGINEERED FOR
RELIABILITY & STABILITY
Built to handle the rigors of
daily tattooing, it features an
aerospace-grade body, 100% USA
construction, and a 2-year warranty
for peace of mind.

REAL-TIME CONTROL
Stay precise with a crisp digital
readout that keeps voltage accurate
and visible at all times.
SEAMLESS PROTECTION
Fully compatible with FK ErgoShield
Grips, which reduce setup time to 10
seconds flat while delivering
maximum hygiene.
ENGINEERED FOR RELIABILITY & STABILITY
Built to handle the rigors of
daily tattooing, it features an
aerospace-grade body, 100% USA
construction, and a 2-year warranty
for peace of mind.

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

“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
“This machine is a game changer! I’ve always wanted a machine that could adjust the stroke on the fly. The ability to have multiple options all in one setup will definitely streamline my process.”
– Brandon Schultheis
“The stroke of your tattoo machine matters more than you think, and the ability to adjust it on the fly is epic. Being able to adjust it to be a lining machine, then pull the stroke back to do some soft shading. That’s awesome”
– Russell Van Schaick

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
“This machine is a game changer! I’ve always wanted a machine that could adjust the stroke on the fly. The ability to have multiple options all in one setup will definitely streamline my process.”
– Brandon Schultheis
“The stroke of your tattoo machine matters more than you think, and the ability to adjust it on the fly is epic. Being able to adjust it to be a lining machine, then pull the stroke back to do some soft shading. That’s awesome”
– Russell Van Schaick

ANY PROJECT. ANY SESSION.

FK ONE ADJUST IS BUILT TO WORK AS HARD AS YOU DO.

ANY PROJECT. ANY SESSION.

FK ONE ADJUST IS BUILT TO

WORK AS HARD AS YOU DO.

SHOP NOW

You may also need

FK One Adjust Wireless Tattoo Machine - Pick Color - Painful Pleasures

FK One Adjust Wireless Tattoo Machine - Pick Color

Added to Cart

Need a larger amount? Make a quick order.

Stealth

Pop Pink

Gunmetal

Description

Size Table

Standard Body Jewelry Measurements

Standard Body Jewelry Threading

Internal Thread Patterns by Gauge

External Thread Patterns by Gauge

Shipping & Returns

AI Generated Review Summary

Summary topics

Review highlights

Reviews

Great investment

Awesome

Great

Well rounded machine

Fk never disappoint

Game changer

Q&A

ARTIST-FIRST DESIGN

INNOVATION THAT DELIVERS

VERSATILITY

BUILT FOR ARTISTS WHO: