Description : For sonic toothbrushesFor very effective cleaning of teeth and gumsHigh quality DuPont™ Tynex nylon fiber rounded bristles and light blue indicator bristles (indicate when replacement is needed)Color designation: 3 colors with 2 extensionsCompatible with the following Philips Sonicare cordless toothbrushes : Diamond Clean®, FlexCare Series , Healthy White , Easy Clean , 5 Series, 3 Series, 2 Series , Clean Care+6 pieces..