The New Quill Black Ink for Brother LC512PKS is a set of two sealed ink cartridges specifically designed for Brother printers. The black ink cartridges are compatible with models such as Brother 440CN, 3360C, 5860CN, MFC-240C, 665CW, 5460CN, and 845CW. This ink cartridge is suitable for inkjet print technology and ensures high-quality printing results. With the Quill brand known for its reliability and compatibility with Brother printers, this product is an excellent choice for those looking to maintain the performance of their printing devices.