They looked like they were of good quality
Unfortunately, these replacement heads did not fit our model of Sonicare toothbrush.  I carefully read the details of which Sonicare bases these heads fit.  Ours is HX6920.  The description said the heads would fit, but when they arrived they do not fit that model.  They looked like they were of good quality, but if they don't fit the unit, we couldn't use them.
Rating: 2 stars