Drum unit is developed utilizing precise specifications so you can be confident that your Canon MF810Cdn and MF820Cdn will produce high-quality results, time and time again. Canon Genuine Organophotoconductor drums are designed to have exceptional charging characteristics, light responsiveness, charge storage, wear-resistance and durability. Each drum yields approximately 34,000 pages.Drum unit is developed utilizing precise specifications so you can be confident that your Canon MF810Cdn and MF820Cdn will produce high-quality results, time and time again. Canon Genuine Organophotoconductor drums are designed to have exceptional charging characteristics, light responsiveness, charge storage, wear-resistance and durability. Each drum yields approximately 34,000 pages.