Black Ink eyebrow mapping string, 10 m (32 ft) per roll, 1 mm thickness. Preinked with a bamboo charcoal coating to create smooth, crisp guideline lines for precise eyebrow mapping. Key benefits Long length: 10 m (32 ft) per sealed roll provides multiple uses without frequent replacement. Ideal thickness: 1 mm string thickness produces clear lines while minimizing excess ink. Builtin cutter: integrated cutter in the sealed box lets you tear off the right length with minimal waste. Durable and disposable: singleuse strings support hygienic practice and quick cleanup. Designed for skin contact: preinked strings are formulated for cosmetic mapping use and easy handling. Product details Color: Black ink Length: Approximately 10 m per roll Thickness: 1 mm Coating: Bamboo charcoal ink Packaging: Sealed box with builtin cutter Practical applications Permanent makeup and microblading mapping: create clear guideline lines to plan brow shape before treatment. Salon eyebrow shaping and waxing: mark points and arches for consistent shaping and symmetry. Training and practice: useful for beauty students and instructors to demonstrate measurement techniques and teach mapping methods. How to use Pull out the desired length using the builtin cutter to minimize waste. Hold the string taut and press gently to transfer a guideline across the brow area. string after each use for hygiene and consistent results. This eyebrow mapping string provides a professional, reliable way to measure and mark brow shapes, helping to improve accuracy during cosmetic procedures and beauty services.