ESTON 2 Pack #63 XL Black/Color Ink for ENVY 4520 1- Year quality warranty and 100% satisfaction guarantee. Affordable price with high quality Package contents : 1 Black F6U64AN , 1 Color F6U63AN Remanufactured 63XL ink cartrigdes ISO9001 Certified / 2 year Shelf life Page yield : (5% coverage of A4 paper) Up to 600 pages for black and 450 pages for color cart Compatible Printers: Deskjet : 1110 1112 2130 2131 2132 2133 2134 3630 3631 3632 3633 3634 3636 Officejet : 3830 3831 3832 3834 4650 4652 4654 4655 Envy : 4512 4516 4520 4522