The FK Irons Modular Body is the only interchangeable tattoo machine body on the market, giving artists the ability to customize their stroke depth without buying multiple machines. Designed for professionals who work across different tattoo styles, the Modular Body lets you switch between stroke options in seconds. The body of a tattoo machine directly determines its stroke depth — and stroke depth determines how the needle moves through skin. Lining requires a shorter, faster stroke, while shading and colour packing benefit from a longer, deeper stroke. With the FK Irons Modular Body, you can adapt your machine to the work in front of you rather than being locked into one setting. Three stroke options are available as standalone bodies: 2.5mm — ideal for fine line work and lining 3.2mm — versatile all-around stroke for shading and detail 4.0mm — deep stroke for colour packing and bold shading Compatible with the FK Irons Flux, Flux Max, and EXO machines. Whether you're a guest artist working from a single machine or a studio professional looking to streamline your kit, the FK Irons Modular Body gives you maximum flexibility without the cost of additional machines.