They fit my Braun toothbrush as stated. But the bristles end up in tiny balls. It feels like brushing my teeth with a scrub brush. To be honest this seems to be a trend towards replacement heads: I bought a couple of regular heads from my local grocery store and they were made exactly the same, although not as hard and plasticy. Unfortunately I didn't open them right away and missed the return window so I can't send them back. I will try to buy the next replacement direct from Braun.
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