These are Premium Gms Compatibles quality replacement cartridges that replace your used HP CF331A toner cartridges. Our Gms Compatibles HP CF331A cyan toner cartridges give you 15,000 pages average at 5% print coverage and are 100% guaranteed to perform with your printer. The Gms Compatibles CF331A toner cartridges replace your original HP Color LaserJet Enterprise M651dn, HP Color LaserJet Enterprise M651n or HP Color LaserJet Enterprise M651xh series toner cartridges exactly. Gms Compatibles is a proud USA owned and operated corporation. We combine precision manufacturing with rigorous multi-layer quality control procedures to provide you with an HP CF331A toner cartridge replacement you can rely on. Our Gms Compatibles CF331A cyan toner cartridge replacement is manufactured to the highest standards and all our compatible products come backed with our 1 year warranty.