Vertix Nano Membrane Cartridge Needles are disposable for safety and intended for single use only. This listing is for one box of 20 Vertix Nano Membrane Cartridge Needles, which come in a variety of nano sizes, including Liner, Shader, Tight Round Liner, and Curved Magnum for fine lining and shading procedures. The 1 Liner (Acupuncture, 0.20mm configuration) comes with a patent sticker.