Before you say: what else do you expect from a cheap product likes this, I fully accept I wasn't expecting these brushes to last as long as an original one - which in my experience last appr 10 months, making it £ 0.25 costs per month. I was however expecting these - at 1/3 of the price of the original ones - to last at least 3 months.
However, the first one fitted very awkward - very tight fit - and managed to break down in one weeks time. Trying to remove the head it completely broke in 3 parts.
The second one fitted - still hoping the first one was just one of those things, like a dud - slightly better and managed to break down in two weeks times - making the overall costs of this "venture" £ 1.23 for one month - a month still lacking one week.
So, be warned: it is true that if it sounds too good to be true, it certainly will be no good at all!
Waste of money, a complete rip-off and now I'm off to order some original braun!Braun Oral-B EB30-4 TriZone Replacement Rechargeable Toothbrush Heads 4-Pack