The Original Dr.pen M8 Cartridges bayonet slot, 10 Pcs/Pack.
These replacement cartridges are specially designed for Dr. Pen Ultima M8 and Angel Kiss M8 PRO, they are not compatible with other models, or other brands.
Dr Pen Ultima M8 and Angel Kiss M8 PRO cartridges are developed based on the highest American Standards.
Use a new one each time and only for the personal use, don't share with others.
Important Note: Remove the white plastic sanitary cover from the top of the cartridge before turn on the pen.