Compatible Dell Series 31XL (Series 33) Extra High Capacity Ink Cartridges for Dell V525w V725w Printers (Cyan, Magenta, Yellow & 3 Black, 6 Pack) Compatible Dell 31 (Series 31) XL High Capacity Color & Black Ink Cartridges Universal Compatible Cartridge replacement for Dell Series 31, 32, 33, 34 Replacement for Dell Models V28CF, 8C4HK, WK32Y, 4W8HJ, 331-7689, 331-7691, 331-7690, 331-7692, Series 31 For use with Dell V525w & Dell V725w printers