2x30ml ND&trade; Brand Black Premium Dye ink refill kit for HP 60 60XL black ink cartridge and HP Deskjet F4275, F4280, F4283, F4288 series inkjet printers 2x30ml ND Brand black premium water-based dye ink for HP 60 HP 60XL black ink cartridges Easy refilling! Big saving! Stability: No setting in 3 years (at normal storage) Temperature: -15C no frozen and 70C no gelling Lightfastness: 5-6 BWS; Waterfastness: 3 (Average); Gasfastness: 4 (Good).