This is one full color set of premium compatible Xerox Phaser 6100 Laser Toner Cartridges (Black, Yellow, Cyan, Magenta). MTI © Compatible Toner Cartridges produce rich, vibrant colors. Crisp detail and clear image quality give you professional results that you can count on, at 40-60% of OEM prices. MTI © toner cartridges are engineered to exceed industry standards of high yield and exceptional quality, and guaranteed to perform with Xerox Laser Printers. Every cartridge is factory tested and ISO approved. We offer an exclusive 30-day customer satisfaction guarantee and 1-year Manufacturer Warranty. Our dedicated customer care staff is available 9 a.m. to 7 p.m, Monday through Saturday to answer any questions and provide technical support.