Hewlett Packard 124a yellow print cartridge and ColorSphere toner for printing professional standard documents and images Compatible with the LaserJet 1600 and 2600n printers Perfectly suited for printing large volumes of coloured text and graphics This product is available in yellow colour Each HP Q6002A cartridge has a duty cycle of approximately 2,500 pages at 5% coverage This toner cartridge is also known as HP124 and HPQ6002