These are replacement brush heads designed for the Oral-B electric toothbrush line, specifically the 'Io Radiant White' model. These components are essential for maintaining optimal oral hygiene routines, ensuring thorough cleaning and polishing action for a brighter smile. They are engineered for compatibility and performance with your device to deliver consistent results. Use these spare parts to refresh your brushing experience and continue targeting surface stains effectively for visibly whiter teeth.