The invention relates to a device for detachably securing modules (1), such as tool holders, to a third component (3), such as a rotatable tool disk for a machine tool, comprising a controllable securing device (51, 53), by means of which the respective module (1) can be re-secured in a detachable manner in a locked position on the third component (3) by means of individual securing parts (15), and a release device (76, 77) which at least partially helps to release the securing device (51, 53) in a release position, such that the release device (76, 77) at least at the beginning of releasing,exerts pressure on the securing device (51, 53) for releasing the individual securing parts (15).