This compatible inkjet cartridge is manufactured to the highest standards with high quality inks and components. It is a compatible Epson® T0321 black cartridge. It is the black cartridge in the T0321, T0322, T0323 and T0324 cartridge set. This product is neither manufactured nor approved by Epson® . Reference to the Epson® trademarks, product names and printer model names is made solely for the purpose of compatibility.