Replacement Toothbrush Heads(10-pc) Compatible with Philips Sonicare Electric Tooth Brush Electric Tooth Brush Refill 4100 Hx6920 Hx9023

Pro: these are off-brand brush heads but they actually stay on as the handle vibrates. Good deal and as effective as the name brand. Con: They are tight on and off. Update after 3 months’ use: these off brand brushes still fit tightly and brush bristles lasted longer than the name brand.

They fit my Sonicare perfectly. They clean my teeth just like the expensive name brand heads but for a fraction of the cost. High quality. I haven't had an issue yet.

These replacement toothbrush heads fit my Sonicare perfectly and clean just as well as the originals. The bristles are soft but effective. They’re a great value for the price—just wish they lasted a bit longer.

these brushes fit and work perfectly in my sonicare toothbrush. great price,great product

Paying full tilt for Sonic-care toothbrush heads? Why? These work just as good and save some money in the process. I switched to these several months ago and definitely helps when you swap head every month. Shapes are similar to the name brand entry and mid tier toothbrush heads. They fit perfectly on my toothbrush and does not affect the battery life. Just saw my dentist for my semi-annual exam and nothing to report!

Working great and lots less that paying for name brand. They were just as good as the sonic brand. Better deal and value for bulk amount. Will buy again when I run out. Easy to use and put on my electric tooth brush. I have a white sonic care tooth brush I've and had for years and they worked fine. I think these do color change after about 1 month of use to let u know might be time for new one. I usually put a new one on every other month. Good size bristle for cleaning your teeth.

Good value but replacement heads do not fit the Sonicare toothbrush, as advertised.

This replacement head is medium soft. Perfect for me.

Se adaptan muy bien a mi cepillo funcionan igual a las originales.