Length variable lift rod

The invention relates to a variable-length lifting rod 1 for a mounting device of a tractor, comprising two connection elements 11, 12 for connecting the lifting strut 1 with components 43, 44 of the mounting device, an adjusting element 17 arranged at two ends of the adjusting element 17 oppositely directed threads 18, 19, wherein the connecting elements 11, 12 each have a thread 14, 16 comprise, with which the connecting elements 11, 12 is bolted with the threads 14, 16 of the adjusting element 17, a Schnellverstellmechanismus 21, by means of which the lifting rod 1 is adjustable and lockable in at least two discrete positions in length.