You get what you paid for!
These compatible toothbrush replacement heads for Oral B electric toothbrushes work for a week and then you have to replace them. As you have to put extra pressure to make them fit the toothbrush, the spring and internal mechanism that makes the head of the toothbrush rotate, breaks, turning the toothbrush useless. So far I have replaced 2 for the same reason in less than a month.
Rating: 2 stars