O&rsquo;Image 2-Pack E525 Black Toner Cartridge Replacing for Dell E525W Color Laser All-in-One Multifunction Wireless and Cloud Ready Printer (2-Pack: Black) Compatibility For for Dell E525W Color Laser All-in-One Multifunction Wireless and Cloud Ready Printer To Replace Toner Cartridges With Part Numbers: 593-BBJU, 593-BBJV,593-BBJW,593-BBJX Page Yield at 5% Coverage: Black 2,000 Pages; Cyan/Magenta/Yellow: 1,400 Pages Per Cartridge All our items are certified with ISO 9001 and ISO 14001, Generic. All products covered by a 100% satisfaction guarantee and 90 day's warranty with O'Image