HP 64 Tri-Color Twin Pack Of Ink Cartridges 6ZA55ANHP 64 Ink cartridges work with: HP ENVY Photo 6220, 6222, 6230, 6232, 6234, 6252, 6255, 6258, 7120, 7130, 7134, 7155, 7158, 7164, 7820, 7822, 7830, 7855, 7858, 7864. Regarding return: Return accept withine 30 days, we will give full refund if the box is never opened and exact same as what we sell. For any opened box return, we will charge 50% restock fee. We can't accept return for ink cartridge is open and used.