Braun Series 3 Foil & Cutter 31B Replacement Head - BlackStraight Razor shaving foil and cutter for Series 3 (older generation) Contour, Flex XP, Flex Integral, black. The replacement shaving foil and cutter for Braun shavers will revive your old shaver. The pack contains 1x foil and 1x cutter that will help you get a clean shaven face and turn your old shaver into a perfect shaving device for everyday use. With the new foil and cutter, shaving will take a much shorter time, and your shaved face will also