4Pcs/set Kids Toothbrush Soft Bristles and Small Heads Replacement Heads Compatible with Oral B Electric Toothbrush Product Information High Compatibility: Bimily replacement toothbrush heads are compatible with most of Oral B electric toothbrushes, but NOT compatible with Oral b Pulsonic, Pulsonic Slim, Sonic and Oral B iO. Extra Soft Bristles: Our Bristles are made with DuPont-bristle by dental professional tools, they get deep into the difficult accessible spaces between the teeth and brush the teeth clean, thereby keep the oral system healthy. Small Heads: Our round small toothbrush heads are very suitable for smaller mouths, the rounded bristles clean the tooth surface intensively and effectively remove plaque. Colorful Rings: Our kid toothbrush head replacement Pack has removable colored rings for identification with the family. Easy to change: Please replace the toothbrush heads every two months or early. It is easy to install with just one click. Compatible Model: All round head rotating Braun electric toothbrush: D4510 D12013 D12013W D12523 D17525 D18 D19523 D19545 D20523 D20545 OC18 D8011 D9525 D9511 D20 D25 D30 D32 type 4739 3709 (non acoustic brush head) 3728 3738 3744 3757 and Braun Oral B electric toothbrush type 4731 4728 4739 3709 3728 3738 Material:POM + DuPont-bristle + 304 Stainless steel Packageinclude:4 Pcs Toothbrush Replacement Heads Note: Due to the different monitor and lighting effect, the actual color of the item may be slightly different from the color shown on the pictures. Thanks for your support :)