Inkcool Remanufactured Ink Cartridge Replacement for HP 88XL (4xBlack, 4xCyan, 4xMagenta, 4xYellow, 12-Pack) 1.Packing list: Black-3pcs, Cyan-3pcs, Magenta-3pcs, Yellow-3pcs 2.one year warranty 3.Fast shipment 4.ISO9001Certified 5.Compatible for:HP Officejiet pro k550/k550dtn/k550dtwn/K5400/K8600/L7480/L7580/L7590/L7680/L7780