WARNING THIS IS NOT THE BRAND ORAL B .... necessarily if the price is for 8 half that for the BRAUN 3 brushes brand ... I should have hit! While the description should specify "compatible with toothbrush DUAL ORAL B Braun ... We quickly see that this is not the same quality but everything is relative! I just think they could be stronger because they are very hard, and I wash my teeth 3-4 times a day, and it did not move! I would say that they are correct, but I find them too WIDE too HARD, I had several mouth ulcers after this brushing, since two days I no longer use this brush and I have no problem, so it really comes from this product -. However, I think for gums and teeth less fragile than me ,, it should not be any worries, my kids use it and they are happy, so I think I might actually keep buying for them, but I will repeat that of ORAL B "SENSIBILY" single head . Moreover, it is important to note that the heads are to be replaced at the same rate as manual ADB for over 8 months, I have already changed 7 times of the brush, so in my case, the point HYPER positive electric Brushing is this feeling of freshness, cleanliness, finished the chore of brushing, brushing time is respected, often even exceeded my case, I love it; Finally, it is a more or less correct product, I do not recommend it but I especially do not recommend it, just pay attention to the shape of the head, but the longevity point of view, I am pretty sure that does not change the brand ... it's to do according to the person, the better it is to try it, the financial loss is not huge in case of dissatisfaction ....