1:Pre-Inked Brow Mapping String For Microblading and PMU Applications, No need for your Pre-ink by yourself 2:Will Cut Your Brow Mapping Time Down Significantly! 3:We have created this ULTRA-THIN mapping string to help cut down on your brow mapping time. This string will give you the exact and precise lines you will need to create symmetrical brows and lips. 4:Simple, easy cleanup, and easy to use are some of the reasons brow artists are using our string. Try it and you will be happy you did!