OralClassOralClass Replacement Toothbrush Heads for Philips Sonicare Click-on Handles, Medium Soft Electric Brush Heads Refills, 8 Pack

Love these replacement brushes. They are inexpensive, hold up well, do the job, and nice price. These electric tooth brush replacements work well, good amount in pack and value for the money. They fit well and easy to replace. My boys like them.

Works great and a bargain price.

Replacement heads were individually wrapped and came with a cute little zippered storage tote. (Surprise!)It has an open mesh design for breathability and makes a neat way to pack a few for travel along with your sonic brush. Yes the mesh bag is that big.This order had two sets of different colored brushes, blue and green, for use by two people.At first glance they look identical to the original but there were some subtle differences. The replacement heads were a little bit smaller around the entire head, but the density of bristles were closer together than original. The center bristles actually had a different shape to them, which for me, who has deep pockets in both my teeth and gums, should help to reach these areas better.I took it out for a test drive and it feels fine. No real noticeable differences in use. The head is very snug fitting compared to the original, which I actually kind of like better, but you will notice that it's a bit harder to pull off and swap out later.Also notice that there is no flex or rubber flange around the bristlehead. Which truthfully, I never knew was even on the original, until I put them side-by-side and saw it in my review pics. So for me that's a moot point.I actually like the covers on these better than original. They're a complete cover, that doesn't require any finessing to fit around the neck of the brush head. So for me that's a win. Easy on easy off without a second thought. These replacements do not have the automatic monitoring that will signal when it's time to change them out. They rely on a bristle color change system. Since I just received them, I don't know how that's going to work out yet, but if it becomes an issue I will post an updated review later.Overall I'm very satisfied with my purchase.4 stars for now, only because of the slight variances from original. If they perform well, I will give them a 5 star rating.

The replacement heads fit great. They feel exactly the same as the original.

The cost of original replacement heads is absolutely insane for this toothbrush (Sonicare 4100). I got a great deal on the toothbrush before Christmas, but it only came with one head. I saw some reviews of off-brand replacement heads in the New York Times and their main complaint was the off-brands seemed to use stiffer bristles. I picked these out because they claimed to be soft to medium. I got this 8-pack for less than the cost of 2 brand name replacement heads. The recommendation is to change the brush every 3 months. After 3 months of use the head and bristles still showed minimal wear (if they wear out faster, you may be using too much pressure), but I replaced it on schedule anyway because the inside gets a little moldy (I have started to remove the head between uses so the inside has a better chance to dry out and prevent mold). That means I have a 2 year supply of heads, which is great. These heads are not identical to the original C2 head. The brushing surface is a little longer, but not as contoured (the original seems to get to the back of the back teeth better) and the clusters of bristles are not quite as dense as the original. They are probably a little softer, but not by much, which is fine. I have switched back and forth with the original some to compare and there is very little difference. The fit is tight and they do not snap into place, but it works. You are supposed to leave a small gap at the base so it can move.

They don’t stay firmly fixed to the Sonic care HX681D, they loosen after a few days, and they are not soft as described.

Fit perfectly as a replacement and way more affordable! Brush heads made well, I have not dealt with any bristles falling off and cleans just like the name brand. Will be buying again.

Good quality, great price, but you need to change the head more often than brand-name heads.