Excellent and they do the same job as the originals. Honest and economical. Of course, I will choose them again.

Just received and before trying them out and coming back, I must mention that the noise made by the toothbrush with this head on is different from the original one. Also, the product comes from China and the packaging reminds me of a cheap product, even though it bears the CE mark. Finally, even the appearance of the bristles on the new heads resembles that of the original ones after a month of use.

So far, I used to buy the original oral b ones and they were 1/4 of the price, so I decided to try them. They do their job but they are harder as if they are of lower quality on a visible level, and while the others last 1 and a half to 2 months, these become somewhat bad in just 1 month. At least for my taste, they are of insufficient quality.