Ink flow: No clogging, no blotching, no interruptions. The inner molding of the cartridge body boasts purposeful grooves and recesses, strategically engineered to enhance pigment retention, thereby reducing interruptions for refills during the tattooing process. Moreover, the elongated tip design ensures both precision and seamless ink flow, elevating the artist's control and performance to new heights. Thin Walls: Less friction, more visibility, smoother experience. The tips are meticulously crafted with an ultra-thin profile, effectively minimizing friction against the skin while maximizing visibility and sensitivity during needle penetration. This innovative design ensures a smoother and more precise tattooing experience for both the artist and the client. Ring System: For an intuitive needle identification. For each needle thickness, there is an associated color code, visible through a small ring on the cartridge. This simplified approach allows for quick identification, improving the efficiency and workflow of the artist. Stability: A unique mold crafted as a unified piece. The cartridge body was meticulously crafted as a single, unified piece, guaranteeing unparalleled component durability and internal stability. Opacity: Just the right amount of visibility. The opacity of the cartridge (70%) conceals the interior system but does not compromise the visibility of the pigment. The Premium Fineline Cartridges were designed and engineered by Piranha LAB.