HouseOfToners Compatible Ink Cartridge Replacement for Dell Series 21/22/23/24 (1 Black & 1 Color, 2-Pack) All cartridges are manufactured to meet ISO 9001 certification standards Contents: 2PK Dell Series 21/22/23/24 Ink Cartridges: 1 Black, 1 Color Page Yield: Black - 500 pages, Color - 460 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