The invention relates to stabilizer (10) for a lower link of a three point hitch of a tractor comprising a first stabilizer element (12) and a second stabilizer element (16) which is connected to the first stabilizer element (12) in a resiliently movable manner. The second stabilizer element (16) can be rotated relative to the first stabilizer element (12) in order to customize the stabilizer length. A securing clip (58) which is pivotally hinged to the first stabilizer element (12) can be brought into engagement with a securing slot (60) formed on the periphery of the second stabilizer element (16) in order to secure the two stabilizer elements (12 16) against rotation. Furthermore a blocking flap (62) is provided which can be pivoted into a closed position in order to block a resilient movement occurring between the stabilizer elements (12 16). A blocking flap portion (64) that is near the securing clip (58) in the pivoting direction is shaped such that the securing clip (58) can also be pivoted out of the securing slot (60) while releasing the second stabilizer element (16) in order to clamp a lower link equipped with the stabilizer (10) when the blocking flap (62) is in the closed position.
