Ouguan Ink1Set Compatible (1 Cyan/Magenta, 1 Black/Yellow)for HP88 printhead C9381a C9382A For hp 88 K550 K5300 K5400 K8600 L7000 L7480 7550 7580 7680 L7710 L7750 L7780 Print head Contents: (1B/Y 1M/C) HP88 Printhead Shipping to USA needs 5-12 days rather than a month Printhead delivers professional-quality color documents Compatible printers:K550 K5400 K8600 L550 L580 L650 L7000 L7400 L7480 L7550 L7555 L7580 testing to ensure quality and compatibility. All products covered by a 100% satisfaction guarantee All products covered by a 100% satisfaction guarantee and 90 days warranty.