Inktonerplus@Compatible Replacement Laser Toner Cartridges for Hewlett Packard CE278A (HP 78A) Black for use in HP Laserjet P1566, Pro M1536dnf, and P1606dn Printers (8pack) Print Color: Black Print Yield :2100 Pages Guarantee: One-Year Style: New Compatible (NOT- OEM) Products has passed the certification of ISO9001 100% Satisfaction Guaranteed