Our needle cartridges cover lots of specifications. For microneedling devices, there are 1/3/5/7/9/12/24/36/42pins and kinds of nano needle cartridges. For makeup tattoo machines, there are 1R, 3R, 5R, 7R, 3F, 5F, 7F, etc. We can satisfy your multiple needs of the needle cartridges. In addition, except for the commonly used needle specifications, we also provide the ones for specific devices, such as the special needle cartridges for Dr.pen A1, Dr.pen A6, Dr.pen M8 and so on. In all, you can always find what you need.