Fits most Oral-B Power brushes. Floss action. Micropulse Bristles: Superior (vs. a regular manual toothbrush) & interdental clean). No. 1 used by dentists worldwide. Does Not Fit: Pulsonic, 3D white battery, Complete battery, Pro-Health battery. www.oralb.com. Customer Service Number: 1-800-56-OralB (1-800-566-7252). www.pg.com. Made in Germany.