Xerox 108R00672 solid ink sticks black for Phaser 8500/8550. Page yield 6,000.Compatible Printers: Xerox Phaser 8550 ADPM, Xerox Phaser 8550 ADT, Xerox Phaser 8550 ADX, Xerox Phaser 8550, Xerox Phaser 8550 ADXM, Xerox Phaser 8500 ADN, Xerox Phaser 8550 ADP, Xerox Phaser 8500, Xerox Phaser 8550 Series, Xerox Phaser 8500 AN, Xerox Phaser 8550 ADTM, Xerox Phaser 8550 DP