The Philips Sonicare F3 Quad Stream oral irrigator nozzle is a powerful water flosser attachment that can be used with any Philips Sonicare Power Flosser. The F3 Quad Stream nozzle provides four powerful wide streams of water to remove debris from between teeth, helping to give you a cleaner and healthier gum line and all round smile. Its simple-to-use design, along with the gentle rubber guide on gums, means that the F3 can be used without irritation. We recommend replacing the F3 Quad Stream nozzle every six months. Our Philips Power Flosser range provides up to 180%* more effective cleaning than traditional forms of flossing, and combined with the Philips Sonicare F3 Quad Stream, you can be sure of maximum coverage. * With Clean Mode, Quad stream Nozzle, Strength 8. Researched by Philips. In-box content: 2 x F3 Quad Stream Nozzles