Article 1 different from the description

I am a follower of the purchase compatible instead of paying expensive branded consumables. This is why I bought this lot of brush heads Electric tooth. It is with regret that I could see the heads, although difficult to adapt my toothbrush, are totally different. A round tip followed by a second, rectangular part. Anyway, I tell myself it should go anyway. That's about 1 month I test. Disappointment! Brushing is quite inefficient. The very different oscillation and tends to "pull" the gums. The cleanliness of the teeth is poor. And the best language happens to get stuck between the round head high with the second part of the brush. After 3 weeks of testing, the first head broke in two during a brushing. I went to a second, identical. I bought this pack of 12. I would serve me 2. I throw the rest and returns to heads Oral B. Too bad for the price!