Drum#: HP Q3964A                             

Compatible:  HP Laserjet 2550L,2550Ln,2550n,2820,2840

Yield Pages: 20,000 Pages Yield @ 5% Coverage for Black Cartridge

                       9,000 Pages Yield @ 5% Coverage for Color Cartridge 

Condition: Excellent

The item  print tested with 100%Satisfaction Guaranteed