Bulk Continuous Ink System (CIS) for: HP Designjet 500 500ps 800 800ps 815mfp (Related Cartridge # : HP10, HP82) Related Printer: HP Designjet 500 500ps 800 800ps Cartridge Number: HP10 & HP82 Pre-filled with 100ml x 4 colors = 400 ml of premium dye based Ink Permanent Chip with Auto Reset 80% Saving on individual Inkjet Cartridge.