A tattoo cartridge refers to a pre-made needle and tube assembly that is used in tattooing. It is a single unit that contains a needle and a disposable tube, which is typically made of plastic. The needle is typically made of stainless steel and is often coated with a layer of medical-grade plastic to make it smoother and more comfortable to use. Tattoo cartridges are designed to be used with a tattoo machine, which is a handheld device that uses a motor to move the needle in and out of the skin. The cartridges are available in a variety of needle configurations, including round liners, round shaders, magnums, and curved magnums, among others. They are generally used for tattooing, permanent makeup, and micropigmentation. One of the benefits of using tattoo cartridges is that they are hygienic and disposable, meaning that each cartridge is used only once and then discarded. This reduces the risk of cross-contamination and infection, which is especially important in tattooing, where the risk of transmitting blood-borne pathogens is high. Additionally, cartridges are designed to be easy to use and change, which can help to save time and increase efficiency in the tattooing process.