PrimoTech Supplies &copy; Remanufactured Replacement for HP 122A Toner Cartridge Set - (Black, Cyan, Yellow, Magenta) Q3960A, Q3961A, Q3962A, Q3963A - for HP Color LaserJet HP Color LaserJet 2550, 2800, 2550L, 2820, 2550LN, 2830, 2550N, 2840 Series Printers - (Black:6,100/Each Color:4,100 Page Yield) Primo Tech Supplies  offers Remanufactured Replacement toner and inkjet cartridges and provide 100% SATISFACTION GUARANTEE for all purchases. All Primo Tech Supplies  compatible toner and ink cartridges are an excellent alternative because they work just as well as the original cartridge brands, but cost half the price. 1-Year Hassle-Free Warranty only with Primo Tech Supplies . Clear, sharp and consistently accurate high quality printouts with ISO9001, 140001 Certified Factory to Meet or Exceed OEM Standards. Page Yield : Black : 6,100, Color : 4,100, Color : Black, Cyan, Yellow, Magenta Replaces : Q3960A, Q3961A, Q3962A, Q3963A Compatible Printer Models: HP Color LaserJet 2550, 2800, 2550L, 2820, 2550LN, 2830, 2550N, 2840