4 PACK Replacement cartridges for HP Color LaserJet 3500 / 3550. This is a set of 4 remanufactured / compatible cartridges (BLACK CYAN YELLOW MAGENTA) cartridges for HP 3500 / HP 3550 guaranteed to perform as well as the OEM HP Color LaserJet Cartridges (Q2670a black Q2671a cyan Q2672a yellow Q2673a magenta)