for use: HP Deskjet 6540,6548,6840,6848,9800,9808,9860,9868 // HP PSC 2575,2578// HP Photosmart 325,335,375,385,425,475,2608,2610,2710,7830,8030,8038,8150,8450,8458,8750,8753,8758 // HP Officejet 7208,7210,7408,7410. Free shipping if you buy 2 or more cartridges.