Accessories Parts Personal Care dr pen m8 derma pen Nano Agujas OEM Meso Needle CartridgeDESCRIPTION Personal Care dr pen m8 derma pen Nano Agujas OEM Derma Pen M8 Meso Needle Cartridge 11 16 24 36 42 Pins 3D 5D Derma Pen Introduction Minimised epidermal damage Less pain and erythema as high speed with vertical direction More easy to operate at the small or curved areas Adjust micro needle length (0. 25~3. 0mm) Prevent cross infection, adopt with disposable needles More quickly and efficient than manual Micro needle How Derma pen work?