Abstract: A device designed to fold the end of a flexible strip back upon itself, e.g. to finish an extremity of a belt fitting into a buckle, comprises a depressible block with a front edge shaped to conform to the desired outline of the strip end. In its normal elevated position, the block is flush with a horizontally movable slider having a complementary confronting rear edge; the block is also overlain by two juxtaposed vertical plungers which are independently displaceable, the forward one of these plungers having a profile conforming to and aligned with the front edge of the block.