All LxTek toner cartridge replacements for E310dw are strictly tested with industry quality control processes to perform superb results. All products are manufactured in an ISO9001 & ISO14001 certified facility | High Quality: Refined toner and high qiality accessories to delivery stability and smoothly printing result | Package Contents: 2 Pack (2 Black) compatible for Dell E310dw P7RMX toner cartridges | Page Yield: Up to 2,600 pages per E310dw toner cartridge at 5% coverage in accordance with ISO/IEC 19798 (Letter/A4) | 100% Compatible Printers: Dell E310dw, E514dw, E515dw, E515dn Laser Printer

All LxTek toner cartridge replacements for E525W are strictly tested with industry quality control processes to perform superb results. All products are manufactured in an ISO9001 & ISO14001 certified facility | Intelligent IC Chip: Smart chip and refined toner to ensure a smooth using experience | Package Contents: 1 Pack (1 Black) compatible for Dell E525W toner cartridges (593-BBJX) | Page Yield: 2, 000 Pages for black toner cartridge at 5% coverage in accordance with ISO/IEC 19798 (Letter/A4) | 100% Compatible Printers: Dell E525W Color Laser All-in-One Wireless and Cloud Ready Printer