refill cartridge: for 75/79 1.longer version (BK:110ml,C/M/ ... (BK: 40ml,C/M/Y: 25ml) 3.CISS refill cartridge for brother LC73/77,LC75/LC79,LC1240/LC1280,LC12/LC17,LC400/LC450 ... for brother MFC-J6510DW,J6710DW,J6910DW-Color:B C M Y-100% compatible as oringal ink cartridge-Solution:1. longer ...