These replacement heads do not fit on the toothbrush. I was able to fit one on the power component after banging it with my palm. Getting it off was more difficult (I used a putty knife to pry the brush head off. The outside diameter of the replacement heads is too large. I received credit for one of the heads but not for the others.
I would like to return the heads for credit or for replacement heads.
Ray Peltier
I have found the "Gentle Care" to be the best brush heads for my new Oral-B iO electric
toothbrush. I used a firmer brush head in the past, but the speed of the iO is much, much
faster and the softer heads are more comfortable and seem to clean as well if not better.
It does not snap on, or for that matter, come off easily. The brush head that came with the toothbrush is very easy to snap on and remove; not so with the additional brush heads in this review