The Flux Max Power Bolt 2.0 from FR Irons remembers your working style. It offers you more control, more innovation and more comfort. The machine adapts, so you can make full use of your skills. It recognizes the colors you use, the settings and the pressure you apply. Tattooing is much more pleasant and uncomplicated.Flux Max can be combined with all standard cadridges and existing grips, powerbolts and the Killersswitch from FK Irons.the machine is available with 3.2 mm, 4.0 mm and 4.5 mm stroke.Technical details:Handle with 38 mm diameterup to 10 hours battery life (depending on power level)Integrated timerStroke: 3.2 mm - 4.0 mm - 4.5 mm Device incl. battery: 205gMade in USA2 hours charging time when using the supplied USB-C charging cable

FK Irons One Adjust – Wireless tattoo machine with adjustable stroke | Premium wireless tattoo pen FK Irons One Adjust – The revolution in wireless tattoo technology Imagine being able to switch from precise linework to soft shading in the middle of a session – without changing machines, without switching off, without interruption. With the FK Irons One Adjust, that's exactly what happens. This wireless tattoo machine sets new standards and combines uncompromising flexibility with proven FK Irons quality. Unique stroke adjustment during operation At the heart of the One Adjust is patented stroke adjustment technology. You can adjust the stroke during a session—effortlessly, without missing a single stroke. Whether you're working with fine lines, rich color packing, or delicate shading, one setup covers it all. No more machine changes, no more cam swaps, no more compromises. The One Adjust adapts to your style, not the other way around. Wireless freedom for marathon sessions With two interchangeable, rechargeable batteries, you can work for up to 12 hours without interruption. The large battery provides up to 6.5 hours of power, the smaller one another 5.5 hours. Thanks to the included dual-slot charger, you always have a full battery at your fingertips. While you're tattooing, the spare battery charges—for true nonstop performance. Technical specifications   Category Details Lift adjustment Infinitely adjustable during operation (patented technology) Power supply Wireless with rechargeable drop-in batteries Battery type 2x Panasonic NCR 18500A (premium quality) Battery life Up to 6.5 hours (depending on settings) Short battery life Up to 5.5 hours (depending on settings) Total runtime 12+ hours with both batteries Voltage range 5-12 volts Voltage adjustment Adjustable in 0.5V increments Charger Dual-slot charger (both batteries can be charged simultaneously) Battery replacement Quick-Twist system – change in seconds Operation 3-button system (up/down/power) LED display Color-coded voltage display (flashes in 0.5V increments) Handle Ergonomic, with click grip Needle depth adjustment Grip compatibilityAll modular FK grips (including Disposable grips) Needle compatibility Compatible with most standard needle cartridges Weight Lightweight design for fatigue-free working Manufacturing Designed, developed, and manufactured in the USA Material Highest quality steel available, extremely robust Transport Premium travel case with custom-fit protective foam Warranty 2 years (for purchases made on or after January 1, 2023) Scope of delivery &nbsp Position Description FK One Adjust machine Fully assembled and ready to use 2x batteries 1x large battery (6.5 hours) + 1x small battery (5.5 hours) Dual charger Charging station for both batteries with LED charging indicator Power cord Special cable for charging station (use only this cable!) Travel case High-quality case with custom-cut protective foam User manual Detailed instructions for setup and maintenance Areas of application & fields of use &nbsp Technology Suitability Advantages Linework ⭐⭐⭐⭐⭐ Precise control thanks to adjustable stroke Shading ⭐⭐⭐⭐⭐ Smooth transition from hard to soft possible Color packing ⭐⭐⭐⭐⭐ Optimal saturation with minimal skin trauma Portrait work ⭐⭐⭐⭐⭐ Finest nuances thanks to variable settings Traditional ⭐⭐⭐⭐⭐ Powerful lines, then directly to shading Realism ⭐⭐⭐⭐⭐ Perfect gradations without changing machines Black & Gray ⭐⭐⭐⭐⭐ From deep black to delicate shades of gray Guest Spots ⭐⭐⭐⭐⭐ Compact, securely packaged, versatile Conventions ⭐⭐⭐⭐⭐ Wireless, long battery life, no setup hassle Operation & features &nbsp Feature Function Benefit Stroke Adjustment Adjust stroke during operation No interruption of the session necessary Quick-Twist Battery Battery replacement by turning Replacement in seconds without tools Power Disconnect Deactivate battery during transport No accidental switching on in the case LED voltage display Color-coded voltage display See the correct setting at a glance Click-grip adjustment Adjust needle depth on the grip Precise adjustment without dismantling the machine 3-button control Simple up/down/power operation Intuitive control, no complex menus Dual-slot charging Charge both batteries simultaneously Always have a full spare battery ready Battery indicator LED shows charge status Blue = fully charged, no surprises Comparison: One Adjust vs. Standard Machines   Aspect FK One Adjust Conventional machines Stroke adjustment Adjustable during operation Machine replacement or cam change required Setup time Set once, cover everything Prepare multiple machines Flexibility Unlimited – all styles with one machine Limited to fixed stroke Workflow Uninterrupted Frequent machine changes Mobility Wireless, 12+ hours Wired or shorter battery life Investment A premium machine Multiple machines for different techniques Universally applicable—designed for every style The One Adjust was designed for versatility. It works independently as your only tool or integrates seamlessly into your existing FK Irons setup. From traditional linework to modern coloring to the finest portrait details, this machine masters every technique. Its adaptability gives you the freedom to tackle any project for any client. Developed by professionals, built for professionals Top artists worldwide have contributed to its development and confirm: The FK One Adjust has the potential to set a new industry standard. The ability to adjust the stroke length to your client's individual skin type makes the decisive difference between good and exceptional results. Artists report faster color saturation, fewer passes required, and thus reduced skin trauma. Ergonomics meets American engineering Designed, developed, and manufactured in the USA, the One Adjust embodies the precision and quality that FK Irons stands for. The ergonomic design ensures fatigue-free working, even during the longest sessions. Compatible with most standard needle cartridges, it integrates seamlessly into your existing workflow. Why choose the FK One Adjust? Patented technology: Globally unique stroke adjustment during operation Maximum runtime: Up to 12+ hours of cordless power with dual battery system All-in-one solution: One setup for all techniques—from powerful lining to delicate shading Artist-approved: Developed in collaboration with world-leading tattoo artists Made in the USA: Premium quality and reliability you can count on Investment security: 2-year warranty and proven FK Irons quality Studio & Travel Ready: Perfect for your home studio and guest spots Time saving: Fewer machine changes = more time for tattooing Ideal for: Established artists who want to maximize their efficiency Versatile tattoo artists who have mastered different styles Studios with a high volume of sessions Artists who frequently work at guest spots or conventions Professionals who value the highest quality and flexibility The FK Irons One Adjust is more than a machine—it's a game changer. It gives you the tools to work at the highest level without being limited by technical constraints. If you're ready to expand your creative freedom and maximize your efficiency, the One Adjust is the machine you've been waiting for. Quality promise Since 2007, FK Irons has stood for innovation and precision in the tattoo industry. Founded by Gaston Siciliano, a tattoo artist and design engineer, the brand has become synonymous with uncompromising quality. Every machine is manufactured to the highest standards and undergoes rigorous quality controls. The result: machines that work as hard as you do. Experience what is possible when innovation meets craftsmanship. The FK Irons One Adjust – built to adapt, built to perform, built to work as hard as you do.  

FK Irons One Update – Cordless Tattoo Machine, 3 Finishes, 3 & 4 mm Stroke (Made in the USA) Cordless, coreless, easy to read. The FK Irons One Update is the redesigned FK ONE—featuring a 1.1″ digital LCD, a brushed coreless motor, and two drop-in batteries that together provide up to 12 hours of tattooing time. 6061-T6 aluminum housing, manufactured in the USA, with voltage adjustable in fine 0.2-V increments. You choose your finish—Stealth, Gunmetal, or Pop Pink—and the stroke length: 3 mm or 4 mm. Built for long sessions that won’t slow you down. At a Glance Brand / Model: FK Irons One Update (cordless pen machine) Finishes: Stealth, Gunmetal, Pop Pink (selectable as a variant) Stroke: 3 mm or 4 mm, fixed stroke length (selectable as a variant) Motor: brushed coreless motor – ultra-smooth operation Display: 1.1″ LCD clearly shows the settings Battery: two drop-in cells – short (18500A) and long (18650GA) Run time: short battery up to 5.5 hours, long battery up to 6.5 hours, combined up to ~12 hours Voltage: 5–12 V, adjustable in 0.2-V increments Frequency: 80–180 Hz, speed 4,800–10,800 rpm Grips: compatible with FK ErgoShield grips Material: 6061-T6 aluminum, Made in the USA What’s new compared to the FK One The updated version focuses precisely on the features that matter most in everyday use. Instead of a simple LED display, you can now read your settings on a 1.1″ LCD screen. The brushed, core-less motor runs exceptionally quietly and smoothly. Two drop-in batteries—one short and one long—noticeably extend your session, and you can adjust the voltage in fine 0.2-V increments instead of rough jumps. Plus, it’s compatible with ErgoShield grips. 3 mm or 4 mm stroke—which one is right for you? The One Update is available in two versions with fixed stroke lengths. The shorter 3-mm stroke feels gentler on the skin and really shines when it comes to shading, color gradients, and black-and-gray work. The longer 4-mm stroke delivers more impact and is ideal for bold outlines and heavy packing. Those who primarily tattoo in one direction should choose accordingly; many artists purchase both stroke lengths for different types of work. What this means in practice The wide operating range—80 to 180 Hz and 4,800 to 10,800 rpm at 5 to 12 V—covers lines, shading, and filling in areas. The 0.2-V increments give you finer control over the stroke, especially when transitioning from lining to whip shading. The coreless motor ensures smooth, low-vibration operation, which is easy on your hand even after hours of use. And because you work with two batteries, you can simply swap them out when one runs low and keep tattooing instead of waiting for it to charge. FK-One users consistently praise the series’ ease of use and versatility. The Update version is new to the market and continues this line with the upgrades mentioned—reliable real-world experience specifically with the Update is just beginning to accumulate. Technical Specifications (apply to all finishes and both stroke lengths) Finishes: Stealth, Gunmetal, Pop Pink Travel: 3 mm or 4 mm (fixed, as a variant) Material: 6061-T6 aluminum Display: 1.1″ LCD Batteries: 2 dual drop-in cells (18500A & 18650GA) Battery capacity: short battery 2,000 mAh, long battery 3,300 mAh Run time (short battery): up to 5.5 hours (depending on settings) Battery life (long battery): up to 6.5 hours (depending on settings) Maximum average runtime: up to 12 hours (depending on battery and settings) Voltage range: 5–12 V, in 0.2-V increments Frequency range: 80–180 Hz Motor: brushed coreless motor Speed range: 4,800–10,800 rpm Weight with long battery: 233 g Weight with short battery: 215 g Length with long battery: 136 mm Length with short battery: 127 mm Maximum width: 38 mm Compatible with FK ErgoShield Grip Made in the USA Package Contents 2 drop-in batteries (short & long) eFest Slim K2 charger USB-C cable Travel case Overview The One Update is the wireless all-rounder for all techniques. If you want to adjust the stroke during operation, the FK One Adjust with wheel-adjustable stroke is the alternative. If you’re looking for a clearly readable, smooth-running wireless machine with long battery life and precise voltage control, this is the right choice. FAQ What colors and stroke lengths are available? Three finishes—Stealth, Gunmetal, and Pop Pink—each with a fixed stroke length of 3 mm or 4 mm. You can choose either option when selecting your model. 3 mm or 4 mm—which should I choose? A shorter 3-mm stroke for smoother shading, gradients, and black-and-gray work; a longer 4-mm stroke for rich outlines and bold filling. What sets the updated version apart from the original FK One? New features include the 1.1″ LCD, two drop-in batteries with longer runtime, voltage control in 0.2-V increments, the brushed coreless motor, and ErgoShield compatibility. How long does the battery last? The short batterylasts up to 5.5 hours, the long one up to 6.5 hours; combined, up to about 12 hours—depending on the settings. Can I adjust the stroke while the device is running? No. The One Update has a fixed stroke length (3 or 4 mm). The FK One Adjust offers an adjustable stroke. Which grips are compatible, and where is it manufactured? Compatible with FK ErgoShield grips; housing made of 6061-T6 aluminum, manufactured in the U.S.