Quality better than cheap "replicas"

According to product description is necessary to change only once every three to four months, the essays. We (normal use: Two to three times a day brushing) they hold about one and a half months to show by a fading of the bristles, that a change is pending. I think but still neat. The bristles are very pleasant and not so brittle and pieksig how some cheap counterfeit papers. The brushes can be easily put on the electric toothbrush and take down and sit during brushing firmly on this. The shape of the brush head is perfect. He is so small that you get into every corner, but big enough to use it as a normal toothbrush (unlike the small round rotating my old toothbrush). I do not mind paying a little bit of more to get the originals, because this simply hold longer, better sit on the toothbrush and feel the bristles better!