Durchwachsen ... 4

In early May, I ordered these brushes, and now the end of July I have more
Nachordern brushes. In three months to consume 4 brushes I find expensive.
One of the brush is too loose on the toothbrush with the
Result that the cleaning performance is insufficient. Very annoying!
The remaining brush the cleaning power is initially very good and can then
Unfortunately strongly after. The shelf life stated by the manufacturer is not reached.

Addendum:
Meanwhile, I have reappointed these brushes and this all at once on my
Handpieces plugged. Result: a brush falling from the handpiece downright
from. At my handpieces can not lie, because one of them quasi almost new
is. I am surprised that I apparently the only one with this problem
am. I'm surprised also that these short heads not obvious in large
Electrical stores are available in my town. I then ProResults
Bought brush heads and all fit perfectly on my handpieces.