HP LaserJet CE255X Print Cartridges provide consistent trouble-free printing every time you print. Average cartridge yields 12500 standard pages. Ink Colour - Black. Only genuine HP toner, such as the HP No. 55X Black High Yield Laser Jet Toner Cartridge, can guarantee top quality and reliability from your HP LaserJet printer. The unique toner formulation ensures consistent and crisp results with the minimum of fuss. Use with genuine HP paper for the best possible toner performance.