The Beyond® Flat Shader Tattoo Needle Cartridges features #12 gauge needles. This pack of 20 cartridges is designed for universal compatibility with all tattoo machines and grips, incorporating an integrated safety membrane that ensures seamless operation and minimizes motor strain. The Flat Shader configuration is ideal for achieving smooth, extensive shading and coloring, offering artists the versatility needed for softer transitions, precise color blending, and efficient coverage of larger areas. The inclusion of a safety membrane is crucial, preventing ink backflow and enhancing ink flow stability, which contributes to a smoother tattooing experience and reduced wear on tattoo machines.