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, including a controllable securing device (51, 53), by which the respective module (1) can be re-secured in a detachable manner in a locked position on the third component (3) by individual securing parts (15). A release device (76, 77) 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).