Breaks off easily after a few weeks of use. I'm only buying OEM parts from hereon.
I wish I could give a good review for this but it lasts about 2 weeks and the bottom breaks off. The OEM part for Oral B head lasted for at least 1 month.  I thought the first time it broke so fast was a fluke but it happened again. I use it for no more than 2 minutes twice a day FYI.
Rating: 2 stars