iy seems to be high quality but does not operate ...
iy seems to be high quality but does not operate with my Sonic brush.  I hoped that it would work but have been thwarted before when trying to fin replacements.  Seems to be a blind alley.  If you have any ideas, I would appreciate your thoughts.  I would have preferred a 5 star rating.  .  Jack Schenck
Rating: 2 stars