Premium LC79BK Extra High Yield Black Inkjet Cartridge fully compatible with the Brother MFC-J6510, J6710, J6910. The use of compatible supplies does not void your printer warranty.
Premium Quality LC-79BK/C/M/Y High Capacity BK, C, M, Y Inkjet Cartridges (Bulk Package-4 pcs LC79Bk, 2pcs each of LC79C,M,Y) compatible with the Brother MFC-J6510, MFC-J6710, MFC-J6910. The use of compatible supplies does not void your printer warranty.