This is a replacement head for compatible electric shavers. It fits the following Braun Series 3 32B models: 300s-B, 300s-R, 301s, 330s-4, 330s-5, 340, 340s-4, 310, 310s, 320, 320R-5, 320s-4, 320s-5, 340s-5 (same as F/C32B). This is a cassette type with an integrated foil and cutter, allowing you to enjoy a shave like new by replacing both at once. It is fully compatible with Braun Series 3 32B electric shaver heads, so you don't have to worry about compatibility. Please be sure to check your model before purchasing.