DESCRIPTION 50 Pieces Cartridges compatible with the Dr pen A6 Needle specifications: L1 / R3 / F5 / F7 Application:Tattoo Cartridge Needle Microblading Eyebrow liner Needle specifications:9 PIN/12 PIN /24 PIN /36 PIN/ 42 PIN /Round nano/ 5D/ 3D Application: Hair Loss Treatment/ Scar / Pigmentation / wrinke / Acne print / Strech marks / Age spots Feature: ✅ Painless treament ✅ The needles are made of high quality surgical stainless steel ✅ Professional tattoo Needles are harmless, sterilized stainless steel for daily use. ✅ Ensure to use a new one each time, don't reuse ✅ Independent sterilization packaging, It is hygienic, convenient, and safe. ✅ The one piece design sharp,easy and fast coloring Microneedle specifications and functions: 1/3-pin: Suitable for lip line, eyebrow, eyeliner, floating lip, and cosmetic lenses line. 5/7-pin: Suitable for cosmetic lenses line and tattoo. 9/12-pin: Detoxifying, helps against swelling of the eyes, dry lines, appearance of blemishes (blackheads, pimples), permanent reddening of the skin, pale complexion. 24-pin: Helps against underlying pigment spots or pimple features, promotes healing of pimples. 36-pin: Helps against minor wrinkles, small scars, enlarged pores. 42-pin: Helps against acne scars, deeper wrinkles, stretch marks, and light cellulite. Round Nano/5D Nano: Suitable for daily skincare, painless nutrition importing, good for sensitive skin, thin cuticle skin, whitening and hydrating, reducing eye dark circles, eye bags, and rejuvenating makeup foundation application. 3D Nano: Suitable for daily skincare, painless nutrition importing, good for sensitive skin, thin cuticle skin, smaller skin areas such as around the eyes. How to Use: The cartridge comes in a sterile pack. Double-cleanse (cleanse and repeat) then wipe the skin clean with an alcohol wipe. Fully tie back your hair, away from your face. Work in small areas and apply serum to each area before needling. This will help to ensure that the pen does not drag o