Unique Design: These needle cartridges are unique and elegant in design.
Disposable Cartridges: Replacement cartridges are disposable. You can replace it easily. Please dispose of the cartridges after every session
Adjustable: You can adjust the needle cartridges (The maximum length of needles is 0.25mm)
Easy to Use: These needle cartridges are readily useable just place them on the pen and enjoy the benefits.