1 Pack Replacement for Okidata 52123601 High Yield 15,000 Pages Black Laser Toner Cartridge Use for OKI B710, B710dn, B710n, B720, B720dn, B720n, B730, B730dn, B730n Series Printers Replacement Toner Cartridge Not- OEM Product's , Compatibility For Okidate B710, B710dn, B710n, B720, B720dn, B720n, B730, B730dn, B730n Series Printers To Replace Toner Cartridges with part numbers : 52123601 Page Yield at 5% Coverage: Black is 15,000 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 warranty with ReInkCo .