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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:
~5.5 hours with 18500A Battery (short cap: 0.25” depth)
~6.5 hours with 18650A Battery (long cap: 0.75” depth)
Performance Note: Battery life varies based on voltage, stroke, and operating parameters.