This drum unit is compatible with select imageRUNNER ADVANCE models including iR C3025, C3025i, C3320, C3320L, C3320i, C3325i, C3330i, C3520i, C3525i, and C3530i.It replaces the GPR-53 and NPG-67 drum units and does not include developer.Designed for performance and consistent print quality, this replacement drum unit supports standard document output and integrates into existing workflows with straightforward installation.