FK Irons – One Adjust – Tattoo Machine – Stealth Edition

Description The FK One Adjust (Stealth) is the next evolution of FK Irons’ acclaimed FK One series — built for artists who demand flexibility, precision, and power in a single machine. Featuring a patented twist-adjust stroke mechanism, this advanced rotary pen lets you switch stroke lengths instantly between 2.0 mm and 5.0 mm, in fine 0.5 mm increments. It’s a genuine all-rounder for lining, shading, and colour packing — no tools, no downtime. Key Features Adjustable stroke length: Twist mechanism allows stroke control between 2.0 mm – 5.0 mm in 0.5 mm steps. Digital touchscreen display: Real-time voltage monitoring, responsive even through gloves. Wireless operation: Drop-in removable Panasonic NCR18500A battery with up to 6 hours of runtime. Dual battery dock included: Keep one battery charging while the other runs your session. Click-grip ratchet adjustment: Precise needle depth control with satisfying tactile feedback. Anti-roll cap: Keeps your machine stable and safe on your station. Made from 6061 T6 aluminium: Lightweight, durable, and balanced for long sessions. Universal cartridge compatibility – works with all major cartridge brands. Engineered and manufactured in the USA. Performance You Can Trust The FK One Adjust’s high-efficiency motor delivers consistent torque across all voltages from 5–12 V, ensuring smooth hits and flawless performance for every tattoo style. The ergonomic pen-style frame reduces hand fatigue, giving you maximum control and comfort throughout your session. Designed for professional artists, this machine combines coil-like power with rotary precision, eliminating the need to swap setups mid-tattoo. From fine lining to dense colour saturation, the FK One Adjust handles it all. Technical Specifications Specification Details Stroke Length 2.0 – 5.0 mm (adjustable in 0.5 mm increments) Voltage Range 5 – 12 V (0.5 V increments) Battery Life Up to 6 hours Motor Type Custom high-torque motor Body Material 6061 T6 Aluminium Connection Type RCA / Wireless Charging Dock Dual-battery included Weight Approx. 135 g Colour Stealth Black Manufactured USA Why Choose the FK One Adjust This isn’t just another rotary — it’s the most adaptable machine FK Irons has ever released. The instant stroke adjustment means you can switch from crisp black lines to soft colour gradients without changing machines. The built-in voltage display keeps your workflow tight, while the lightweight aluminium shell keeps it balanced and comfortable for marathon sessions. Whether you’re an experienced artist or levelling up your setup, the FK One Adjust gives you the reliability, control, and precision you expect from a world-class brand.