This is a compatible 3 pack of black Solid Ink ColorStix cartridges, part number 016-1307-01, designed for use with Xerox Phaser 340, 350, and 360 printers. These cartridges deliver brilliant, professional color output and are manufactured to meet high-quality performance standards. Priced approximately 20-40% less than original Xerox cartridges, they provide a cost-effective solution without compromising on print quality. Backed by a 100% Quality Satisfaction Guarantee.