For the following Printers:Oki C5550MFP
43381726 Oki Magenta Drum for the Oki:
C5800 and C5900 Series Colour LasersC5550MFP
Approximately 20,000 pages basd on typical office usage where 20% of printing is 1 page only, 30% is 3 page documents and 50% is print runs of 15 pages or more. Each customer`s actual usage may vary.