?Satisfaction Guarantee or Money Back?We offer 1 year full warranty for waterpik accessories. For any type of problem, you can contact our professional support line. ?Waterpik parts replacement?We recommend replacing the waterpik handle every 12 months to maintain optimum performance of the irrigator and daily use. ?water Pick compatible?portable water flosser compatible WP-100, WP-110, WP-140, WP-100W, WP-100C, WP-100WPLT, WP-110W, WP-130W, WP-112, WP-130, 150, WP-250, 300, WP-660, 662, 670, 672 series, WP-950, WP-900. ?Water Pick Hose Replacement? The installation was a breeze with just two screws to remove and replace. The replacement handle comes with new screws and a new valve to install in the hole of the handle. with installation instructions. ?Water Flosser Handle Replaceable ?Oral hygiene accessories compatible with waterpik wp-series.To stop the flow, press and hold the handle button.