0.25mm 25pcs Dr.Pen Ultima A6 12 pins cartridges, bayonet slot, fit for Dr. Pen Ultima A6 model
Use a new one each time, don't reuse. If not, it may cause skin infection
The replacement cartridges need to disinfected(by 75%alcohol or physiological saline or uv) before use, and need sterilized nursing parts by physiological saline