LD Remanufactured MICR Toner Cartridge Replacement for HP 42X Q5942X High Yield (Black) Page Yield: 20,000* | Shelf Life: 24-36 months | *Average printer cartridge page yield in accordance with ISO 19752 The use of remanufactured cartridges and supplies does not void your printers warranty All LD branded products are backed by a 100% satisfaction and LIFETIME guarantee This remanufactured toner contains up to 85% new parts including brand new wiper blades, OPC drums, and other internal components For use in the following HP LaserJet Printers: 4250, 4250dtn, 4250tn, 4250n, 4250dtnsl, 4350, 4350dtn, 4350dtnsl, 4350n, 4350tn