Replace every 3 months
These brush heads only fit the 360PRO EVO Sonic Toothbrush (360PROST073B)
PLEASE NOTE: BRUSH HEADS ARE NON-REFUNDABLE. PLEASE ENSURE THAT YOU ARE ORDERING THE CORRECT BRUSH HEADS FOR YOUR BRAND AND MODEL OF SONIC TOOTHBRUSH. THESE HEADS WILL ONLY FIT THE MODEL SPECIFIED ON OUR WEBSITE.