HP 27X Laser Jet Toner Cartridges contains ultraprecise toner to ensure extra sharp, black text, smoother greyscales, & finer detail for images. HP Laser Jet 27X Laser Jet Toner Cartridges with ultraprecise toner have a convenient all-in-one cartridge design that allows effortless installation & maintenance. Magnetic seals lock the toner inside the cartridge to prevent leakage The page yield of the HP 27X is 10, 000 standard pages in accordance with ISO/IEC 19752. The HP 27X Black Laser Jet Toner Cartridges are ideal to be used with the Laser Jet 4000 & 4050 printers, providing maximum convenience at a lower cost per page for high-volume users. Please note that this item is delivered direct from our supplier & may take a little longer to arrive.