Genuine Lexmark No.82/83 High Resolution Black Ink Cartridge.

Compatible Models:

All-In-One X5150, X6150, X6170
JetPrinter Z55, Z55e, Z55se, Z65, Z65n, Z65p

Ink Yield:  

#82 Black:
600 A4 Pages (Based on 5% coverage)

#83 Colour:
480 A4 Pages (Based on 5% coverage)