4 Compatible Ink Bottles 70ML (Dye Ink) each. Compatible for Epson Eco Tank Expression ET-2720 ET-2710 and Workforce ET-4700 Printers Fill Directly from the Bottles. The Bottles are designed to ensure easy and hassle-free filling experience. Do not mix with other ink types. Run the cleaning cycle of your printer to remove the residue of other ink types inside the printer. PRINTOXE® Brand Compatible Ink Bottles in Retail Package Shown in Image. Shelf Life exceeds 24 Months.