Autobrush for Kids double-sided brush head replacement features a unique GumDefend bristle blend of soft-flexible silicone and clinically-engineered nylon. Designed specifically for children ages 3-5, this ADA-accepted brush head delivers a 360-degree clean with 58,000 bristles, reaching every quadrant of the mouth simultaneously. This replacement head is compatible with Autobrush sonic bases and is clinically proven to outperform manual and standard electric brushes in plaque removal and gingivitis reduction. Brand: Autobrush Model: Kids Brush Head Age 3-5 Type: Replacement Brush Head Bristle Material: Nylon and Silicone Blend Compatibility: Autobrush Sonic Toothbrushes Age Range: 3-5 Years Features: Double-Sided, 360-Degree Clean, ADA Accepted Quantity: Pack of 1 Will accept almost all reasonable offers. (within range of asking price) Please no low-ball offers.