Material: soft bristles Packing:blister pack with 4 heads FEATURES:

Oral B CrossAction (EB-50A)These toothbrush heads are Compatible with rotating Oral-B toothbrushes Compatible with all of the following Electric Tootbrushes (Handles): Professional Care: 500, 550, 1000, 3000, 2000, 600 , 1000 ,3250, 5000, 5500, 6000, 6500, 7400, 7500, 7550, 7850, 7875, 8000, 8300, 8500, 8850, 8860, 8875, 8900, 8950, 3D Excel, Plak Control 3D Triumph Professional Care: 9000, 9100, 9400, 9425, 9450, 9475, 9500, 9900, 9910, 9930, 9950 Trizone: 600,1000,3000,5000 Triumph: 5000 wireless SmartGuide, 4000, Triumph 5000 inkl. Smart Guide Smart Series: 4000, 4750, 5000, SmartSeries 4000 , SmartSeries 5000 with SmartGuide, Vitality Precision Clean Vitality Floss Action Vitality Sensitive Vitality Sensitive Clean Vitality Pro White Vitality Dual Clean Vitality White and Clean White and Clean Advance Power: 400, 450, 450TX, 800, 850, 900, 950, 950TX, Kids, Kids 950

• 4pcs/pack replacement brush heads designed to fit Braun Oral-B electric toothbrushes and plaque remover models.
• Soft, rounded bristles in the center of the head protect teeth from harmful harsh brushing.
• HEALTH & SAFETY STANDARD: The bristles are made of ultra-soft nylon which is easy on your gum, FDA approved and has passed dentist's official health and safety standard. One brush head will last for about 3 months under normal usage.
• FUNCTIONAL DESIGN : Advanced bristle design for superior cleaning
• EVERY THREE MONTHS: Reminder bristles fade from blue to white, helping you stay in line with dentist recommendations by alerting you when it's time to change your brush head

4pcs/pack replacement brush heads designed to fit Braun Oral-B electric toothbrushes and plaque remover models.Careonline