The Waterpik Replacement Compact Brush Heads, SRSB-3W provide a soft, smaller, slimmer toothbrush head design that provides excellent access for precision cleaning. The soft, high-low bristles pattern combined with the sonic electric toothbrush motion gently but effectively remove plaque from hard-to-reach areas. Replace every 3 months for optimum effectiveness. Package includes 3 color-coded replacement toothbrush heads (base colors may vary).