The Canon GPR-57 Genuine Black Toner Cartridge 0473C003AA is a high-quality printer accessory designed specifically for Canon imageRUNNER Advance 4525, 4535, 4545, and 4551 printers. Manufactured in Japan, this genuine/original toner cartridge ensures crisp and professional black prints with a yield of up to 42,100 pages at 6% coverage. Compatible with Canon printers, this unit comes in a box containing one toner cartridge, making it a reliable and efficient choice for businesses and offices that require consistent and high-quality print results.