LxTek TN450 Compatible Toner Cartridge Replacement Set for Use with LaserJet HL-2230, HL-2240, HL-2240D, HL-2270DW, HL-2280, MFC-7240, MFC-7360N, MFC-7860DW, Black LxTek compatible toner cartridge replacements for TN450 have been awarded ISO9001 certification Page yield: 2,600 pages per toner cartridge at 5% coverage Package contents: (1 Black) compatible TN450 toner cartridge Guarantee: 1-year limited warranty/shelf life: 18-24 months