Speedy Inks Compatible Toner Cartridge Replacement for Brother TN660/TN630 High-Yield (Black, 2-Pack) HIGH COMPATIBILITY: Use for Brother Printers, see further details in Product Description HIGH PAGE YIELD: Brother toner cartridge with high page yield, 2600 Pages, Black, Pack of 3 LONG SHELF LIFE: The packaging material of the ink cartridges enables a shelf life of 24-36 months RELIABLE INK: Professionally manufactured toner cartridges, comparable results to original brand DOES NOT VOID WARRANTY: Use of aftermarket replacement cartridges has no effect on printers warranty