Speedy Inks - Compatible with Brother Compatible 2 pack TN221 black toner cartridge (TN221BK) for Brother HL-3140CW, HL-3170CDW, MFC-9130CW, MFC-9330CDW, MFC-9340CDW. HIGH COMPATIBILITY: Use for Brother Printers, see further details in Product Description HIGH PAGE YIELD: Brother toner cartridge with high page yield, 2500 Pages, Black, Set of 3 LONG SHELF LIFE: The packaging material of the ink cartridges enables a shelf life of 24-36 months PREMIUM QUALITY CARTRIDGE: Brother replacement cartridge ISO9001 certified to meet OEM standards DOES NOT VOID WARRANTY: Use of aftermarket replacement cartridges has no effect on printers warranty