Gigablock CIS Refill Kit with 6 Colors UV(Ultra Violet) resistant Ink for Continuous Ink System of Epson R220 R230 R320 (Related Cartridge # : T048120, T048220, T048320, T048420, T048520, T048620) CIS Refill Kit with 6 Colors UV(Ultra Violet) resistant Ink for Continuous Ink System of Epson R220 R230 R320 (Related Cartridge # : T048120, T048220, T048320, T048420, T048520, T048620) Comes with 600ml Ink (100ml BLACK Ink,100ml YELLOW Ink,100ml CYAN Ink,100ml MAGENTA Ink,100ml Light Cyan Ink,100ml Light Magenta Ink ) Equivalent to 8 ~ 9 cartridges per color; Thats a total of about 40 ~ 45 cartridge yields all in this 1 refill kit Perfect buy for high volume printers, this represents over 200% savings compared to buying new OEM cartridges The ink in this refill kit is UV(Ultra Violet) resistant Dye based and matches the OEM quality in both quality and page yield