A sterile, single-needle round-liner cartridge designed for precision work. The 1401 RL is a 1 -prong round liner needle. Ideal for crisp, delicate lines – great for fine outlines, detail work, or hair-stroke effects in brows, lips, eyes, or areola work. The cartridge is made to fit most standard cartridge grips/machines, features a membrane to prevent ink leakage, and comes pre-sterilized and individually packaged for hygiene and safety.