The attachment brushes suitable for the Waterpik sonic toothbrushes SR 3000E and SR 1000E

These replacement toothbrushes fit the Waterpik Sensonic sonic toothbrushes and have a larger, wider brush head that is excellent for precision cleaning of your teeth. The STANDARD size corresponds to "large". Replacement brushes should be changed every 3 months to maintain long-term cleaning effectiveness. 3 replacement heads for sonic toothbrushes per pack.