Unfortunately, the brushes do not fit so easily readily on the Philips Sonicare. Both DiamondClean that I have used previously, fit it with no problems. But the other 3 each have a small corner inside it and thus you get the brushes it only with very strong pressure, therefore they are to be settled nciht suited to regularly, if two people want to use the electric toothbrush. Very sad and therefore really poorly designed by Philips.
