As is no returns they are old I have no idea if they still work. AThe Cartridge World Compatible Black Inkjet Cartridges BCI-10 BCI-11 are designed specifically for Canon printers, providing high-quality black ink for printing documents and images. These compatible cartridges from Cartridge World ensure reliable performance and consistent results, making them a cost-effective option for Canon users looking for quality inkjet cartridges. With a focus on inkjet print technology and compatibility with Canon printers, these cartridges are ideal for producing professional-quality prints in black with ease.