Horrible -- they are not a suitable generic as advertised
While these fit on the Oral B toothbrush, they soon start falling apart and die before the bristles even have a chance to wear down. The brush part is not securely attached like the real thing or as with other generic versions of this product from Kroger and Walgreen's, and after a couple weeks stops spinning/vibrating properly. Doesn't get your teeth clean and feels dangerous inside the mouth. They also are not a tight fit at the base, so the vibrations make it come loose as you use it. This product is poorly made, does not clean teeth properly and could become dangerous, causing injury to the mouth, gums and teeth. Since there's a limit to how long you have before returning a defective item, I am too late with getting my money back, because I tried to give these replacement heads the benefit of the doubt and used them for several months before realizing the problem was truly with the horrible quality of this product and not me. I tried it on two different Oral B toothbrushes, and the same thing happened on each. I am disappointed in amazon for the poor quality control on this product. It is not suitable as a replacement head.
Rating: 1 stars