★ Pre-inked: This eyebrow mapping string is pre-marked with hypoallergenic cosmetic grade pigment. Easy to leave thin but well seen marks on the skin. | ★ 30m(98ft) Length: The string is 30m in length, with the exquisite cutting design, you can get the correct string length quickly and easily. | ★ Our pre-inked strings are made of detoxifying bamboo charcoal. It is the thinnest string possible for eyebrow tattoo precision. By using it, you can map the eyebrow’s shape easily and accurately. | ★ Our pre-inked microblading string marks are very easy to remove after use, simply remove the mark with a clean cotton pad or Alcohol pads. | ★ Designed to give you the exact and precise lines you will need to create symmetrical eye brows.