12 Pack 8+4 Refurbished Cartridges for HP 27 and HP 28. Includes ink4print Cartridges for 8ea HP 27 + 4ea HP 28. brand new non-OEM (Non Original Equipment Manufacturer) Cartridges are sold in individually sealed packages Volume of ink is equal to OEM ISO 9001 Certified Manufacturer 60-Day Return Policy (See Description)