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7RL Tattoo Cartridge Needles are designed for tattoo artists who demand precision and reliability in their linework. Featuring 7 needles arranged in a tight round liner (RL) configuration, these cartridges deliver crisp, clean lines and sharp outlines, perfect for detailed tattoo designs and bold borders.Crafted from medical-grade stainless steel, the needles ensure durability, sharpness, and consistent ink flow with minimal skin trauma. The cartridge includes a built-in anti-backflow membrane that prevents ink and blood from contaminating the tattoo machine, ensuring hygiene and extending machine life.These cartridges are EO gas sterilized and individually packaged to meet professional safety standards. Compatible with most universal cartridge grips and rotary or coil tattoo machines, the ergonomic design offers comfortable handling for long tattoo sessions.Whether you're outlining fine details or creating bold linework, the 7RL Tattoo Cartridge Needles provide the control, precision, and safety essential for professional tattoo artistry.