These Waterpik Interdental Replacement Brush Heads are specifically designed for use with the SR1000 and SR3000/SRIP-3E models. They ensure effective cleaning between teeth and along the gumline, promoting optimal oral hygiene. Regular replacement ensures peak performance and sanitation of your daily routine. Utilize these specialized brush heads for thorough cleaning that complements regular brushing, targeting hard-to-reach areas for comprehensive mouth and gum care.