HP's LaserJet Toner 2- Pack Toner Cartridges in black are an economically efficient way to print high volumes. The average cartridge yields 2100 pages, so you are getting double the pages and double the value with this 2 pack, and you get the same consistent, professional results and hassle- free printing of Original HP ink cartridges. These cartridges are compatible with the HP LaserJet Pro P1566, P1606 and M1536 printers. *HPs inkjet print cartridges, ink cartridges and printheads are warranted to be free from defects in materials and workmanship during the period of the warranty.