Original design parts fits models: DF5, DF20, DF10, DF30, DF40, DF55, DF56 DA57, DA107, DA307, DA325, DA407, DA757, DA767, XLR9000, XLR9200, XLR9400, XLR9500, XLR9600, XLR9800 Note: Cutter may look different than the cutter that came with your shaver. There are two designs for this part but both are interchangeable, however, this new style will not fit models F3790 or F3800 Fits models: DF5, DF20, DF10, DF30, DF40, DF55, DF56 DA57, DA107, DA307, DA325, DA407, DA757, DA767, XLR9000, XLR9200, XLR9400, XLR9500, XLR9600, XLR9800 Note: Cutter may look different than the cutter that came with your shaver. There are two designs for this part but both are interchangeable, however, this new style will not fit models F3790 or F3800