FK Irons One Adjustable Stroke Tattoo Machine with Drop in Battery

Built to Adapt, Engineered to Perform 

FK One Adjust delivers true FK power, unmatched versatility, and an artist-first design that revolutionizes the way you work—for the better. 

This is our first machine to introduce patent-pending stroke adjustment technology, allowing you to adjust your stroke from 2.0mm up to 5.0mm in 0.5mm increments. 

VERSATILITY WITH NO LIMITATIONS: FK One Adjust adapts to any style or technique, so you don’t have to choose between machines. Take on your boldest linework to your finest detailing, all with this one machine: every stroke you need is already here. 

Hits like an FK... every time: Manufactured to deliver consistent FK-quality power consistently every session 

Modular Compatibility: Works seamlessly with other FK Irons modular grips. 

Premium Brushed Motor: Engineered for consistent performance and smooth power delivery. 

Voltage Range: 5V–12V with precise 0.2V adjustments. 

Maximum Output Current: 1A 

Machine Size: 152mm x 38mm. 

Weight:

• 244g (8.6oz) with 18500A Battery
• 268g (9.5oz) with 18650A Battery 

 Dual Rechargeable Panasonic Batteries: Includes two drop-in batteries plus two interchangeable caps. 

Battery Life: 

Performance Note: Battery life varies based on voltage, stroke, and operating parameters.