Using these waterpik dental water jet tips is easier and more effective than floss for reducing plaque and improving gum health! cleans between your teeth and deep below the gumline while your gums are massaged to make them strong and healthy. Compatible models: waterpik ultra dental water jet wp-100 waterpik dental water jet wp-450 waterpik dental water jet wp-360 waterpik dental water jet wp-260 included: two color-coded wp-100 ultra jet tips per package.