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.