Product Guides
Dr. Pen M8 Cartridges Explained: Every Pin & Nano Tip...
Nine official Dr. Pen M8 cartridge types compared side by side: the 11, 16, 24, 36 and 42-pin needles plus Nano S, R, 3D and 5D tips, with what each one is for and why M8 tips never fit the M8S.