The TCT E40 - 1491A002AA Black Toner Cartridge is a high-quality printer accessory designed for use with Canon printers such as PC940, PC920, PC921, and PC980. Manufactured by True Color Toner, this standard yield toner cartridge is compatible with the specified Canon models and provides consistent, professional-quality printing results. The black color ensures crisp, clear text and images, while the compact dimensions of 6.50" in height, 12.99" in length, and 4.09" in width make it easy to handle and transport. Made in China, this toner cartridge is a reliable choice for maintaining your printer's performance.