The product is a 2-pack of W1480A black toner cartridges compatible with HP printers such as 148A Pro MFP 4101fdn, 4101fdw, and 4001dw. Each cartridge is capable of printing up to 3,000 pages and comes with a chip for easy monitoring. It is important to note that this toner cartridge is not compatible with models ending in "e" and is specifically designed for use with the mentioned HP printer models. The brand inkni ensures high-quality printing performance for your documents and images.