Gigablock Bulk Continuous Ink System (CIS) for: Epson R200 R300 R300M R340 RX500 RX600 RX620 (Related Cartridge # : T048120, T048220, T048320, T048420, T048520, T048620) Related Printer: Epson R200 R300 RX500 RX600 Cartridge Number: T0481 ~ T0486 Pre-filled with 165 ml x 1 color, 125 ml x 1 color and 100ml x 4 colors = 690 ml of premium UV Resistant dye based Ink. Permanent Chip with Auto-reset chipsets 80% Saving on individual Inkjet Cartridge.