Compatible with iR ADVANCE DX 4825, 4835, 4845, 4825i, 4835i, and 4845i models for proper fit and performance. Designed for volume printing environments with a page yield of up to 150, 000 pages. Complete drum unit rebuild kit includes all necessary components for thorough maintenance and restoration. Helps maintain consistent print quality and performance in office and professional settings. Designed for straightforward installation to support efficient printer maintenance.