31B Electric Men's Razor, Razors,Electric Foil Screen Shaver Foil & Cutter Head Replacement Shaver head for Men for B raun old version 3 Series 350,370,380,390cc,5000/6000 Precision series,

Model No. 6000. Fits Model No.: 6550, 6525, 6520, 6515, 6510, 5515, 5510, 5416, 5415, 5414, 5315, 5314, 5312, 5311, 5005. Replace your foil and cutter block every 18 months to get a 25% better shave. recommends that the heads on its Flex Integral electric razors (model numbers in the 5000 and 6000 series) be replaced every 18 months. This pack consists of the dual-foil and cutterblock for those Flex Integral razors. Though it will fit all Flex Integral razors, the dual-foil in this pack is housed in black and is best for models with black housing around their foils. (Replacement packs in other colors are also available.) Each of the two foils and the cutterblock perform individually as the razor runs across the face for a close, smooth shave. Installation is easy, and the diagrams on the package show how to set the razor up.