FK One Adjust Wireless Tattoo Pen Machine - Gun Metal
Availability: In stock
The FK One Adjust is engineered for artists who demand freedom, precision and consistency in every session. Designed and built in the USA, this wireless pen-style machine combines the compact feel you love with serious performance under the hood.
With a patent-pending adjustable stroke mechanism (2.0mm–5.0mm in 0.5mm increments), you can adapt from crisp lines to soft shading to bold colour packing - all without changing machines mid-session.
A digital display shows your actual output in volts or hertz, giving you real-time performance feedback under load, so you always know exactly how your machine is hitting.
The weight is approximately 244g with the 18500A battery and 268g with the 18650A battery, both easily drop-in, designed for reliability during long sessions.
Built with aerospace-grade aluminium and powered by FK Iron’s signature motor system, the FK One Adjust delivers stable torque, smooth hits, and a balance that keeps you going hour after hour. Choose one machine and let it do multiple jobs.
Why Choose the FK Irons FK One Adjustable?
• Full adjustable stroke range: 2.0mm–5.0mm in 0.5mm increments - switch techniques mid-flow.
• Wireless drop-in battery system (dual caps for 18500A or 18650A) - clean setup, no tangled cords.
• Digital display shows volts or hertz - you control performance, not guess at it.
• Ergonomic pen-style frame, lightweight and built for long sessions.
• Precision-engineered USA assembly - reliability you can count on.
Technical Specifications
· Stroke Length: 2.0mm–5.0mm (adjustable in 0.5mm increments)
· Voltage Range: 5V–12V with fine adjustment (0.2V)
· Battery Runtime: Approx. 5.5 hours with 18500A short cap; approx. 6.5 hours with 18650A long cap
· Weight: Approx. 244g (8.6oz) with 18500A; approx. 268g (9.5oz) with 18650A
· Machine Size: 152mm x 38mm
· Material/Body: 6061 T6 aluminium shell (aerospace-grade)
· Display Type: Digital screen showing volts or hertz; ambidextrous orientation
· Battery Type: Dual drop-in Panasonic 18500A & 18650A batteries included
· Stroke Adjustment: Tool-free, mid-session stroke change via ring or twist mechanism
· Compatibility: Compatible with standard cartridge systems; modular grip options
FREE DELIVERY FROM £100
ORDER UP TO 7PM FOR SAME DAY DISPATCH
Select your country for pricing and delivery information
For Rest of World delivery, please see individual quote at basket.
Royal Mail 2nd Class |
Orders under £25 and below 2kg. Delivery takes 3-5 working days. Delivery is Monday to Saturday. |
£5.00 |
NEXT DAY DELIVERY |
FREE when spending £100 or more Delivered the next working day. Delivery is Monday to Friday.
|
FREE Over £100 £5.00 Orders Under £100 |
NEXT DAY BEFORE 12.00 MIDDAY |
Delivered the next working day. Delivery is Monday to Friday.
|
£12.00
|
NEXT DAY BEFORE 2PM |
Delivered the next working day. Delivery is Monday to Friday.
|
£9.00
|
SATURDAY BETWEEN 8AM – 2PM |
|
From £5.00
|
ACCESS POINT - NEXT DAY DELIVERY |
Delivered the next working day. Delivery is Monday to Friday. |
FREE Over £50 £5.00 Orders Under £50 |
Cash On Delivery Option: + £19.99Packages may require a signature on delivery and deliveries could start at 8am.
Next day delivery is unavailable to more rural regions & areas. Other delivery timescales to these areas may also be affected.
We work with the best delivery partners to provide the fastest and easiest service possible. However, due to external factors beyond our control we are unable to guarantee delivery timescales especially during peak periods such as Christmas and Bank Holidays.
Can I cancel my order?
Once your order has been processed through our system, unfortunately we are unable to amend this. Please contact our sales office on +44 114 257 6022 to discuss the next steps. If you need to change the address of your parcel, please call UPS using your tracking number which was sent to you on email. Please be advised this can incur a 24-48 hour delay in the UPS system.
What is your returns policy?
You can find our returns policy here.
Can I track my order?
If you have selected a UPS delivery service, you can track your order on the UPS website using the tracking number sent to you on email. However, Royal Mail services cannot be tracked.
My order hasn’t arrived?
We are sorry that your package has not arrived; our couriers do all they can to get your items to you but please allow an extra few days during busy periods. Your tracking number, which was sent to you on email, should show any possible delays your package has come across, and whether your package has been given to an Access Point or has had any delivery attempts, but please contact us directly if you need further assistance.
What happens if I’m not in when my order arrives?
If there is nobody available at the delivery address, UPS will make three attempts on three separate working days, or deliver your package to a nearby Access Point. If the delivery is still unsuccessful, or the package reaches the maximum number of days the Access Point can hold it, the parcel will make its way back to us.
I have a credit on my account, how do I use this?
To claim back a credit on your account, you will need to contact our sales department and we will process your order and apply the credit, please note this cannot be used online.
What time do UPS deliver from?
The standard UPS delivery times are between 8am-6pm.
What is your order cut off point?
Our cut off for next day delivery is 7pm.
Do you deliver worldwide?
We can ship worldwide, yes! Please contact our sales office if you have any queries regarding your address.
For Rest of World delivery, please see individual quote at basket.
Packages may require a signature on delivery and deliveries could start at 8am.
Note: Next day delivery is unavailable to more rural regions & areas. Other delivery timescales to these areas may also be affected.
We work with the best delivery partners to provide the fastest and easiest service possible. However, due to external factors beyond our control we are unable to guarantee delivery timescales especially during peak periods such as Christmas and Bank Holidays.
STILL NEED HELP?
STANDARD DELIVERY |
FREE when spending £250 or more Delivery is Monday to Friday.
|
FREE Over £250 £6.99 Orders Under £250 |
NEXT DAY DELIVERY |
FREE when spending £250 or more Delivered the next working day. Delivery is Monday to Friday.
|
FREE Over £250 £9.99 Orders Under £250 |
ACCESS POINT - NEXT DAY DELIVERY |
FREE when spending £50 or more Delivered the next working day. Delivery is Monday to Friday.
|
FREE Over £50 £5.00 Orders Under £50 |
Packages may require a signature on delivery and deliveries could start at 8am.
Next day delivery is unavailable to more rural regions & areas. Other delivery timescales to these areas may also be affected.
We work with the best delivery partners to provide the fastest and easiest service possible. However, due to external factors beyond our control we are unable to guarantee delivery timescales especially during peak periods such as Christmas and Bank Holidays.
Can I cancel my order?
Once your order has been processed through our system, unfortunately we are unable to amend this. Please contact our sales office on +44 114 257 6022 to discuss the next steps. If you need to change the address of your parcel, please call UPS using your tracking number which was sent to you on email. Please be advised this can incur a 24-48 hour delay in the UPS system.
What is your returns policy?
You can find our returns policy here.
Can I track my order?
If you have selected a UPS delivery service, you can track your order on the UPS website using the tracking number sent to you on email. However, Royal Mail services cannot be tracked.
My order hasn’t arrived?
We are sorry that your package has not arrived; our couriers do all they can to get your items to you but please allow an extra few days during busy periods. Your tracking number, which was sent to you on email, should show any possible delays your package has come across, and whether your package has been given to an Access Point or has had any delivery attempts, but please contact us directly if you need further assistance.
What happens if I’m not in when my order arrives?
If there is nobody available at the delivery address, UPS will make three attempts on three separate working days, or deliver your package to a nearby Access Point. If the delivery is still unsuccessful, or the package reaches the maximum number of days the Access Point can hold it, the parcel will make its way back to us.
I have a credit on my account, how do I use this?
To claim back a credit on your account, you will need to contact our sales department and we will process your order and apply the credit, please note this cannot be used online.
What time do UPS deliver from?
The standard UPS delivery times are between 8am-6pm.
What is your order cut off point?
Our cut off for next day delivery is 7pm.
Do you deliver worldwide?
We can ship worldwide, yes! Please contact our sales office if you have any queries regarding your address.
For Rest of World delivery, please see individual quote at basket.
Packages may require a signature on delivery and deliveries could start at 8am.
Note: Next day delivery is unavailable to more rural regions & areas. Other delivery timescales to these areas may also be affected.
We work with the best delivery partners to provide the fastest and easiest service possible. However, due to external factors beyond our control we are unable to guarantee delivery timescales especially during peak periods such as Christmas and Bank Holidays.
STILL NEED HELP?