This is one full color set of OEM Quality Compatible Laser Toner Cartridges (Black, Yellow, Cyan, Magenta) designed specifically for HP Color LaserJet CP4025 and CP4525 Printers. MTI © compatible color toner cartridges produce rich, vibrant colors. Crisp detail and clear image quality give you professional results that you can count on, for 40-60% less than OEM prices. MTI © toner cartridges are engineered to exceed industry standards of high yield and exceptional quality, and guaranteed to perform with HP Color LaserJet Printers. Every cartridge is factory tested and ISO approved. We offer an exclusive 30-day customer satisfaction guarantee and 2-year limited 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.