• Compatible with Oral B iO Series 2, 3, 4, 5, 6, 7, 8, 9, and 10 electric toothbrush models. • Design with rounded, dense bristles for deep tooth-by-tooth cleaning. • Helps effectively remove plaque providing personalized care. • Provides a comfortable experience for daily cleaning, tooth whitening, and gum care. • Simple, hassle-free replacement system by removing the old head and attaching the new one. • It is recommended to replace the brush head every 3 months to maintain optimal cleaning.