They did not do the job.
The price was attractive for these replacement heads but the job they did was a real disappointment.  I have a 7 year old Oral B electric toothbrush that I paid only $20 for.  The toothbrush does an amazing job when I use the Oral B brand replacement heads.  These Generic Oral B compatible toothbrush replacement heads were not worth their (inexpensive) price.  I felt like they never got my teeth clean and I ended up throwing them out and purchasing the more expensive Oral B brand.
Rating: 1 stars