LD Compatible Toner Cartridge Replacement for HP 42X Q5942X High Yield (Black) Page Yield per Cartridge: 20,000* | Shelf Life: 24-36 Months | *Average printer cartridge page yield in accordance with ISO 19752 We offer lightning fast shipping on all printing supply and inkjet photo paper orders The use of LD replacement ink and toner cartridges does not void your printers warranty All LD branded products are backed by a 100% satisfaction and LIFETIME guarantee For use in the following HP LaserJet Printers: LaserJet 4250tn, 4250, 4350dtn, 4350n, 4240n, 4250dtnsl, 4350, 4350dtnsl, 4240, 4250dtn, 4350tn, 4250n