?HIGH QUALITY?- Made of 316B medical Stainless Steel, Each needle is pre-sterilized with E.O Gas, individually packed, clean and safe ?EASY TO USE?- Very easy to work with light and Sharp. Elexible enough pin point can create natural and beautiful eyebrows. Painless to make a great permanent makeup beauty job ?APPLY TO?- These microblading needles can only suit for Charmant Machine or some standard Screw Design permanent makeup machine ?100% SATISFACTION GUARANTEE?- Acumen Schimatle are backed by 100% guarantee that you are fully satisfied with your product or receive your money back. Feel free to contact us for any of your tattooing and piercing needs. We answer all messages within 24 hours