Gigablock CIS CISS Bulk Continuous Ink Supply System For Epson Expression XP-600 XP-800 T273020/120/220/320/420 Related Printer: Epson Expression XP 600 800 Cartridge Number: T273020/220/320/420/120 Pre-filled with 165 x 1 color & 100ml x 4 colors = 565ml of premium UV Resistant Ink 80% Saving on individual Inkjet Cartridge