"Install a genuine Kyocera Black Laser Toner Kit (TK310) and enjoy flawless output with the minimum of fuss from your Kyocera laser printer. Order a new toner kit when your printer displays a Toner Low error message and keep it handy. When the current toner cartridge is exhausted, the printer will display Replace Toner and you must install a new cartridge before resuming printing. This standard yield cartridge is packed with enough black toner to print 12,000 pages."