XPRO III series True Color Pigment Ink CISS for HP Officejet 7110 7610 7612 6600 6700 printers Continuous Ink system NEW XPRO Bulk Continuous Ink System (CIS) for:HP Officejet 7110 7610 7612 6600 6700 printers Pre-filled with 400ml of Ultra True Color Pigment Ink, Guarantee no clog Quick and Easy installation, you will be printing in minutes COC chipsets reset the cartridges so there is no need to utilize a chip resetter nor take the cartridges out of the printer to refill Best quality, fast shipping, best service