Epson inkjet color cartridge set. Black, Cyan, Yellow, Magenta. Just unwrapped the black cartridge and found it was the wrong size. Cannot return to store. These cartridges fit Epson WorkForce WF-3620, WF-3640, WF-7110, WF-7210, WF-7610, WF-7620, WF-7710, and WF-7720.