2) Compatible List of Ink Cartridges : Hp Inkjet Ink Cartridges 21XL 22XL 27XL 28XL 56XL 57XL 58XL 21 22 56 57 58
3) The Refill Ink Kits Appropriate for all HP inkjet printers, Refillable Cartridges, Ciss, Remanufactured Ink Cartridges, Original Used hp OEM Ink Cartridges.
4) Guarantee: We provide Replacement/Refund for any defective resulting from our factory, In the event you received the thing with issues, please contact us inside 15 days when you received it.
five) Use Manual: Please refer to the Picture, there are detail steps to refill the Ink cartridges. The ink were given 36 months shelf life.