Braun 30b series 3/7000/4000 series foil and cutter cartridge. Replacement parts for Braun's series 3 & 7000/4000 series models. Would apply to model SyncroPro, Syncro, SmartControl, & tri control. To maintain optimal shaving performance you should clean the shaving parts regularly with Braun cleaning agents and consider replacing the foil and cutter block every 18 months.
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