This is a compatible Xerox 016-1886-00 black laser drum unit designed to work with your Xerox Phaser 7700 laser printer. It serves as a replacement for the original Xerox 016-1886-00 drum unit. Engineered for reliability, this compatible drum unit provides exceptional print quality and performance. Using compatible drum units does not void your printer warranty. Backed by our 100% Quality Satisfaction Guarantee.