Braun 31B (5000/6000series) Foil & Cutter high performance parts for Series 3 Shavers (5610 5612 old 350 360 370 380 390CC)
Amazon.com: Braun Series 3 Old Generation Electric Shaver Replacement Head - 30B - Compatible with Electric Razors SmartControl, TriControl, 340, 330, 320, 310, 300
Braun 31B Series 3 Replacement Foil and Cutter Cassette Multi Black 5000/6000 | eBay
Braun 31B Foil Refill Replacement Only Foil Shaver's Foil for sale online | eBay
Braun 31B Replacement Foil and Cutter Cassette – Myers Electric