1: Match machine: Epson: C79/ C90/C92/CX3900/4900/5900/7300/8300(Cartridge No. T0731-T0734). 2: Beautiful, elegant and unique appearence design, ABS material ink tank cover prevent ink fade from light, and prevent ink tank from broken. 3: Newest generation auto reset chip 100%compatible with printer. 4: 80ml each color, easy install with install instruction, convenient, eco-enviroment, economy, save up to 90%.