if you print more, hp can help you reduce your printing costs by using hp laserjet toner cartridgees twin packs. get professional results and reliable, trouble-free printing with genuine hp print cartridgees with a convenient, high-volume print solution.hp genuine hp printing supplies are easy to buy, manage and use. reduce work interruptions with hp two-packed hp 35a laserjet black toner cartridgees.original hp laserjet toner cartridgees represent up to 70% of the printing system. the cartridgees are made with the printer, ensuring reliable, professional, time-saving results. hp double print cartridgees further reduce costs and save money.print technology: laseryield (monochrome): average cartridgee yield is 1500 standard pages. the reported yield value is in accordance with iso/iec 19752.compatible with hp laserjet p1005 and hp laserjet p1006.