1X B8145 013R00686 CT351179 Compatible Drum Unit for Altalink B8145 8145 B8155 8155 B8170 8170 image unit This drum unit is designed to work with the specified models in the Altalink series.It installs directly into the printer and supports print functionality as part of the imaging system.The unit is engineered for compatibility with the listed devices to facilitate consistent performance during its operational life.