Set of 3 compatible black Solid Ink ColorStix cartridges 016-1831-00 for Xerox Phaser 850 printers. These cartridges deliver brilliant, professional color output and are designed to provide consistent results on various media. Priced approximately 30-40% less than OEM alternatives, these cartridges offer a cost-effective solution without compromising quality. Backed by a 100% Quality Satisfaction Guarantee, they are a reliable choice for your printing needs.