These original Lexmark 0C734X24G Photoconductor / Drum Units consists of 4 Units, Black, Cyan, Magenta and Yellow, representing a saving over buying the units indivudally. The C734X24G is the ideal choice for high volume printing environments such as offices and schools due to it`s high page yield of 20,000 pages per drum (based on the universal standard 5% coverage).Designed to work in harmony with your Lexmark printer the 0C734X24G works smoothly with all other printer components to consistently produce crisp vibrant printouts every time.