Philips recommends replacing the nozzle of your AirFloss every 6 months. Even if you are not the only one who uses the Airfloss, it is useful to have several attachments in the house. In this package you get two attachments for the Airfloss. They are easy to change and the guided tip makes flossing between teeth much easier. The small curved nozzles ensure easy cleaning in hard-to-reach areas. With Philips HX8012 / 07 nozzles 2 pack k you have longer fun of your AirFloss and improve your oral hygiene.These nozzles only apply to Airfloss HX8211 / 02.