ESTON Kodak 30 / 30XL Combo Ink Cartridge Refill Kit (2 x 30 ml Black + 2 x 30 ml Cyan + 2 x 30 ml Magenta + 2 x 30 ml Yellow) Packing List: 2 x 30 ml Black Refill ink + 2 x 30 ml Cyan Refill ink + 2 x 30 ml Magenta Refill ink + 2 x 30 ml Yellow Refill ink + Thumb Drill + refill instruction More feature : 1.High color saturation,high fidelity. 2.Ultrafiltration,no clogging caused. 3.Weak acid or alkalescent formula,no corrosion problems. 4.No bleeding,no smear,high print quality. 5.Quick dry formula,satisfaction at high speed printing. 6.Water base formula,no toxicity,no chemical hazards,no environment pollution Each black ink bottle can refill up to 3-4 times ; Each color ink bottle can refill up to 3-4 times. Printer Compatibility: KODAK ESP: C310 C315 3.2, ESP OFFICE 2170, KODAK HERO: 3.1 5.1 GUARANTEED : If for any reason you are not satisfied with our products, you can return or exchange within 2 weeks of receiving shipment. Your purchase is covered by a 1 year replacement warranty if the product doesn't work well.