Black refills for iO Gentle Care electric toothbrush, 4 pcs, Oral-B [8700216198899] Description: Oral-B iO Gentle Care replacement brush heads combine powerful yet gentle micro-vibrations with our unique round design inspired by dentists for a professional cleaning feel every day; Designed exclusively for Oral-B iO electric toothbrush handles, Gentle Care brush heads remove more plaque than a regular manual toothbrush, leaving teeth clean and shiny. Benefits: - the Gentle Care brush end has up to 4,000 soft bristles and a protective outer edge that adapts precisely to the curvature of the teeth and protects the gums; - as dentists recommend changing the brush head every 3 months for best results, Oral-B brush heads have bristles that change color and signal when they need to be replaced; - enjoy superior cleaning power with the only replacement brush heads designed exclusively for and perfectly compatible with the Oral-B iO electric toothbrush. Presentation: 4 pcs