Brother Standard Black Ink Cartridge. For use with MFC-J6910 and MFC- J6710DW printers. Approximate page yield: 600. OEM: LC-1240BK. With a reputation for high quality, reliable components, you can trust in Brother LC1240 ink cartridges for top quality, high resolution results. Brother printer machines work with separate ink cartridges meaning you only have to replace the empty cartridge, producing cost savings. Providing high quality results with rich black text and vibrant colour prints that won?t smudge, this inkjet cartridge produces up to 600 A4 pages at 5% coverage.