The Flat Shader Needle Cartridges by Beyond® are designed with a standard #12 needle gauge/diameter, tailored for artists seeking precision and versatility in shading and coloring. The flat surface of the needles is ideal for achieving seamless shading and consistent color fills. A distinctive feature of these cartridges is the integrated protective membrane, which ensures a barrier against ink backflow, thereby maintaining the integrity of your work and the durability of your equipment. The cartridges are engineered to be more flexible, minimizing the stress on tattoo machines' motors and extending their operational lifespan.