High Compatibility: Electric Replacement Heads Are Compatible With Philips Sonicare Click-On Toothbrush Handles, For 2 Series Plaque Control, For 3 Series Gum Health, For Diamondclean, For Easyclean, For Flexcare, For Healthywhite, For Hydroclean, For Protectiveclean, For Prestige, For Expertclean | | Leave Your Mouth Fresh And Clean: The Curved Shape Bristles Can Perfectly Fit With Your Teeth To Brush Away Stains And Teeth Whitening Effectively For A Deep Clean Even In Hard-To-Reach Areas, To Help You A Brighter Smile | | High Quality: Brush Heads Are Made Of Genuine U.S. Dupont Round-End Bristles And It'S Bristling Are Comparable To The Brand Name Replacements. Bristles Never Falling Off And Densely-Packed Bristles Give You A Comfortable Brushing Experience While Deep Cleaning | | Always Know When To Replace: When The Blue Indicator Bristles Faded, So You Can Tell Right Away When It'S Time For A New Replacement Head To Always Get An Effective Clean | | Det.