A device is disclosed for introducing the free end of a wrapping material into the bale forming chamber of a round baler. The device comprises a pair of elongate plates (122a) and (122b) that are biased towards one another to grip the wrapping material between them. One of the plates (122a) has a leading edge that projects further than the other in the feeding direction of the wrapping material (30). In the invention, the leading edge is formed with forward projecting resiliently flexible fingers (124d) which are transversely spaced from one another.