FK Irons AL13 Zen — Cutback Shader Tattoo Machine — Red

Red • Coil Tattoo Machine
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Weight 0.3990
Brand FK Irons

Cutback Shader Tattoo Machine in Red — AL13 Zen by FK Irons

The FK Irons AL13 Zen is versatile, lightweight and balanced. It is the first AL13 machine to employ the 1.5 coil system. It is able to push needles ranging in size from single needles up to a 50 mag. The machine packs a powerful punch, but is balanced enough to prevent “pullback force” during tattoo procedures.

The AL13 Zen features FK Irons’ top quality CNC machined aircraft aluminum construction with a body that has been mirror polished and anodized for durability. It is engineered and manufactured in the USA.

This listing is for the FK Irons AL13 Zen as a cutback shader machine in red.


  • Machine Weight: 0.28lb (~4.5oz)
  • Machine Color: Red
  • Designed for shading procedures
  • CNC-machined aircraft aluminum construction
  • Loaded with 1.5 coil system
  • Made in USA
Size Table

Standard Body Jewelry Measurements

The following webchart is a quick reference guide for standard body jewelry measurements and how to measure basic body jewelry. Please print this webchart to help measure your body jewelry accurately.

Size Reference Chart

Visit our PainfulPleasures Infocenter for additional body jewelry information. There, you will find detailed articles on standard body jewelry sizes, how to measure body jewelry, basic body jewelry, and more.

Standard Body Jewelry Threading

Ensure compatibility between standard (non-custom) PainfulPleasures body jewelry parts using the tables below. More information on threading, including custom thread patterns, can be found in our Threading Infocenter article.

Internally threaded jewelry has a threaded post on the top and/or end, which is then inserted into a threaded hole in the barbell shaft.

Internal Thread Patterns by Gauge


18g, 16g

14g, 12g


Internal Thread Pattern

0.8mm or 0.9mm



Externally threaded jewelry has a threaded post on the barbell shaft, which is then inserted into a threaded hole in the top and/or end.

External Thread Patterns by Gauge


18g, 16g

14g, 12g, 10g

External Thread Pattern



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