This Pigment Black Ecotank Ink Bottle is compatible with Epson Expression ET-2500 ET-2550; WorkForce ET-4500 is designed to meet or exceed the specifications of genuine OEM cartridge. Epson T774120 is manufactured under the most stringent quality control standards and is systematically inspected disassembled cleaned and refilled with 100% new ink which is made in the USA. Besides the exceptional printing quality this Epson T774120 compatible ink bottle also gives you an economical alternative to buying expensive OEM (Genuine) Epson cartridges.