Compatible with Most Waterpik Water Flosser: * Aquarius (WP-660, WP-662, WP-663, WP-665, WP-667, WP-668, WP-669) * Aquarius Professional (WP-670, WP-672, WP-673, WP-674, WP-675, WP-676) * Complete Care (WP-900) * Complete Care 5.0 (WP-861, WP-862) * Complete Care 5.5 (WP-811, WP-812) * Complete Care 7.0 (WP-950, WP-952) * Complete Care 9.0 (CC-01CD010-1, CC-01CD012-2) * Complete Care 9.5 (CC-02CD010-1, CC-02CD012-2) * Cordless (WP-360) * Cordless Advanced (WP-560, WP-562, WP-563, WP-565, WP-567, WP-569) * Cordless Express (WF-02W010, WF-02W012) * Cordless Freedom (WF-03CD010, WF-03CD012) * Cordless Pearl (WF-13CD010, WF-13CD012) * Cordless Plus (WP-450, WP-462, WP-463, WP-465, WP-468) * Cordless Professional (WP-440) * Cordless Revive (WF-03W038) * Cordless Select (WF-10W010, WF-10W012) * For Kids (WP-260) * ION Cordless (WF-11W010-1, WF-11W012-2) * ION Professional (WF-12CD010-1, WF-12CD012-4) * Nano (WP-310) * Nano Plus (WP-320, WP-322) * Ortho Care (WP-940) * Radiance (WF-09CD010-1) * Traveler (WP-300) * Ultra (WP-100, WP-112, WP-113, WP-115, WP-117, WP-118, WP-140) * Ultra Plus (WP-150, WP-152)