Waterpik PIKSRSB3 Compact Brush Heads for SR Series and Complete Care Compact Replacement brush heads for Waterpik Sensonic SR-1000, SR-3000 and Waterpik Complete care WP-900. The advanced brush-head design removes plaque even in hard to reach areas. Provides efficient cleaning and plaque removal for all tooth surfaces. Fits the Waterpik Sensonic Professional Brush, SR3000, SR1000 and WP900. Unique high low filament configuration for hard to reach areas. It is recommended to change your brush heads every 3 months or sooner as required. Features: 3 Compact Brush Heads High-low bristles configuration Soft end-rounded bristles Fits: Complete Care (WP-900) Sensonic Professional Plus (SR-3000 and SR-1000). Box Contains 3 replacement compact brush heads.