Okin Toner Cartridges are designed to give outstanding performance with your laser printer, from the first page to the last. They offer outstanding quality and print professional looking documents and photos at an economical value per page. Quick and simple to replace, they are a staple for any office. Black toner cartridge. Prints up to 2,600 pages. Compatible with Brother HL2140, HL2150N, HL2170W, MFC7340, MFC7440N and MFC7840W laser printers.