Amazon.com: 51S Silver 8000 Series Shaver Foil Replace Head Replacement for Braun 5646 5647 5649 5751 5757 5758 Etc(Plastic Sealed Packaging) : Beauty & Personal Care
Amazon.com: Series 5 Replacement Head 51B Foil & Cutter Replacement Head, Compatible with Braun Electronic ContourPro/360°Complete/Activator/WaterFlex/WF1s/WF2s Series Shaver : Beauty & Personal Care
Page 3 of Braun Electric Shaver 5646 User Guide | ManualsOnline.com