The drum unit is not performing well at all. I started using it in March and after printing some 700 pages, the quality of printing has deteriorated.

Reply by our customer service

Hello! Thank you for leaving a comment on this product. We are sorry to hear that you had a bad experience with the drum units. We will send you an email to help you from there.

8 months later the drum has a black streak I can't get rid of. Very disappointing.

Reply by our customer service

Hello, Fred! We're sorry to hear that you a problem with that drum. Please contact our customer service department either by phone at 1-866-979-7463, by sending the live chat online (Monday to Friday) or sending an email request to us (all the time) so we can look into this for you!

The drum seems to work (that's the good news). The latch that locks the toner cartridge to the drum does not lock properly and the drum did not fit back into the printer well. I had to fiddle with it and finally force it into place.

Reply by our customer service

Dear Bob, Thank you for your reviews. We have better quality toner and drum. Please refer to the link http://www.123inkcartridges.ca/p-346970-tn660-dr630-combo-brother-tn-660-dr-630-compatible-toner-cartridge-drum-unit-combo-bundle-pack-moustache.