Compatible Brother LC103BK (XL Series) High Yield ink cartridges replacement for Brother MFC-J4310DW,J4410DW,J4510DW,J4610DW,J4710DW,J6520DW,J6720DW,J6920DW color inkjet (8 pc-Value Pack LC103 Black) Offers One-Year Warranty against Defects and Six Months Money Back Guarantee on all Merchant and Amazon fulfilled orders Up to 600 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