SHOP AT 247 Compatible Toner Cartridge Replacement for HP 131A ( Black,Cyan,Magenta,Yellow , 4-Pack ) Offers One-Year Warranty against Defects and Six Months Money Back Guarantee on all Merchant and Amazon fulfilled orders Page yield: Black: up to 1,600 pages at 5% coverage; Color: up to 1,800 pages at 5% coverage These replacement cartridges were professionally maufactured in an ISO 9002 Factory Fast shipping and 100% Customer satisfaction The use of compatible replacement cartridges do NOT void your printers manufacture warranty