HouseOfToners Compatible Ink Cartridge Replacement for Dell Series 21 Y498D (1 Black) All cartridges are manufactured to meet ISO 9001 certification standards Contents: 1 Dell Series 21/22/23/24 Black Ink Cartridge Page Yield: 500 pages (page yield measured at 5% page cover of standard 8.5x11 sheet) | Shelf Life: 36 Months We ship within 1 business day via USPS First Class, USPS Priority, or UPS Ground 100% Satisfaction Guaranteed with 1-year replacement policy