Was concerned when I received these cartridges for my MFC-665CW as they are different from the OEM Brother LC51 cartridges (e.g. slightly shorter, different design, etc.). But I bit the bullet and put one in. Other than asking me to verify the colour of the cartridge (it doesn't do so on an OEM cartridge), it did install and seems to be working. Will be very happy if I have no problems as these are much cheaper than OEM cartridges.

I love this product. I have been buying this product for years from here. I bought over hundreds sets of these. I got very few with problems however I still recommended my family and friends here to buying any other inks or products. These are so cheap so you should expect some with problem, which is less than .5%. Also I always buy more than $49 so shipping is free and very quick and reliable. I rather buy old printer to use same ink because these are cheap to use and quality are excellent. Thank you.

Just as good as original brand, if not better. Very reasonably priced as well. I always buy this brand.

Très bien

product as described - highly recommended

Great stuff but my printer pores all clogged up because I haven't used it for a while. Not the cartridge fault.