(Bayonet slot) For N2/M5/M7/A1/A6 etc...Please double check this cartridge matches your machine.
Replacement Derma Pen Needle Cartridges:Only for the personal use, don't share with others in order to avoid infection.
Promote absorption of toning lotion, gel and facial cream, rejuvenate and tighten skin, improve aging skin.
Package included: 10pcs*36-Pin cartridge needle (Bayonet slot)