Oral-B Professional Precision Clean Replacement Brush Head, 3 Count. Cleans better 3x longer vs. Store brand refills*. *After 13 week vs. 4 weeks of comparable store brand use Indicator bristles signal time to replace brush head. Dentists recommend changing your brush every 3 months Interchangeable brush head: floss action, pro white, precision clean, sensitive gum care, dual clean Country of origin is Germany