This toner cartridge is designed for use with HP printers and is compatible with the HP 381X, 411X, 531, and 118 models. The cartridge comes in cyan and is sold in units of one. It is a compatible type and can be used with other brands as well. The product is listed under the categories of toner cartridges, printer ink, toner & paper, printers, scanners & supplies, and computers/tablets and networking. This cartridge is perfect for those who need to print color documents.