Brother TN-247BK (Yield: 3,000 Pages) Black Toner Cartridge Brother HLL3210/DCPL3510/MFCL3710 Black Toner 3K Brother Original Toner cartridge Brother's toner is formulated to exacting standards to ensure you receive high quality print resolution and reliability Toner particle size, shape and colour pigmentation all have a direct impact on the sharpness of the printed image