Enjoy great quality prints and reliable operation from your OKI B710/B720/B730 laser printer by installing a genuine OKI Black Toner Cartridge (01279001). When you see a Toner Low message on your printer's LCD display, you can print around 100 more pages before the cartridge is exhausted. Make sure to order a new cartridge and replace it as soon as possible. This standard yield toner cartridge is packed with enough black toner to print 15,000 pages.