20pcs Tattoo Pen Holder For Skin Marking Pen Skin Surfer Stencil Outling Pen Ho1. Used to demarcate areas for piercing or tattoo, make excellent lines. 2. Tattoo skin pen doodler tattooing microblading skin marker pen cores permanent makeup tattoo supplies. 3. Non toxin ingredient,safe and high quality. 4. Used before tattooing or piercing. Fine point tips make for accurate and clean lines. 5. This tattoo skin pen helps you draw clean and accurate lines before tattooing or piercing.