LD Compatible Toner Cartridge Replacement for Okidata 44574901 High Yield (Black, 2-Pack) Page Yield: 10,000 | Shelf Life: 24-36 Months The use of compatible replacement laser toner cartridges and supplies does not void your printers warranty. All LD branded products are backed by a 100% satisfaction and LIFETIME guarantee We offer lightning fast USPS Priority Mail shipping as well as UPS shipping on all printing supply and inkjet photo paper orders. For use in the following printers: MB461 MFP, MB471, MB471W, B431d and B431dn.