Compatible Brother LC103BK,LC103C,LC103Y,LC103M XL High Yield ink cartridges for MFC-J4310DW,J4410DW, J4510DW,J4610DW,J4710DW,J6520DW,J6720DW,J6920DW color (31 pc LC103 Black,Cyan,Yellow,Magenta) 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