These are a package of four Generic replacement toothbrush heads. I have the Braun Oral- B toothbrush and these replacements, fit perfectly. The Toothbrush Replacement Heads have a unique contoured field of bristles that are designed to fit the natural shape of your teeth and they have floss like action. I like that these toothbrush heads have little plastic inserts and part of it is longer than other parts. They do a really good job of cleaning my teeth and seems to get in between the teeth very well. They are better at removing plaque and decreasing the chance of gingivitis when compared to a manual toothbrush. The Premium Oral-B Floss Action Generic Replacement Toothbrush Heads are not affiliated to Procter & Gamble Company or to its trademarks such as "BRAUN". They independently manufacture these generic replacement heads in order to provide a high quality replacement for various Oral B toothbrush heads. I received this product free for my honest, unbiased opinion. Click button below to see product.