The E-Z Ink 201X Replacement for HP 201X Toner Cartridges 4 Pack High Yield CF400X is a high-quality product specifically designed for HP printers. This 4 pack includes cyan, yellow, magenta, and black toner cartridges, with each cartridge offering a high yield for extended printing efficiency. Compatible with models such as pro m277dw, m252n, and m252dw, this product is manufactured in China and provides reliable and professional-quality results for your printing needs.