This image drum is an integral part of your laser printer that determines image quality. Officially designed by Oki, the image drum functions as an individual colour drum cartridge in order to print high resolution images at rapid print speeds. Replacing your Oki drum unit as a separate colour maximises drum life and increases efficiency. If your existing Oki drum has reached its end of life, or is performing inconsistently, you can install this high performance printer drum in order to refresh your imaging system. Durable and innovative Oki supplies work in harmony with your printer and the yellow drum gives you professional quality colour graphics that will last for approximately 20,000 pages.