Replacement Waterpik Water Flosser Tips Classic Jet Nozzles for Oral Irrigator WP 100 300 450 660[Advanced Design ]:These replacement tips are greatest for every day use to clean your teeth,improve your oral health,various accessories meet your diverse needs.[High Compatiblity]:Those replacement tips are compatible with most for WaterPik water flossers,such as Kids Water Flosser,Cordless Professional, Ultra Water Flosser, Aquarius Professional, Cordless Plus, and all Designer Series Water Flossers.[Deep cleaning]:Replacement flosser tips for universal use and to clean deep between teeth and below the gum line. and they are twice as effective as string floss for improving gum health.[Replacement Tips Changing]:It is recommended that standard nozzles and tongue cleaning nozzles be replaced every six months and other nozzles replaced every three months.Material: plasticcolour: As shownPackage Contents:1 set x Replacement TipsOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.