A screw head holder for a hand-held screwdriving tool with - a shaft , having at one end a connecting section for connection to an output of the screwdriving tool and at the other end a driving section for driving a screw head , and - a holding device , mounted on the shaft and having at least one holding element , - wherein the holding device is configured such that the at least one holding element is, depending on an axial relative movement between the shaft and the holding device , radially movable relative to the driving section between a holding position, in which the screw head is axially held between the driving section and the holding element , and an opening position, in which the holding element axially releases the screw head , - wherein at least one locking element is provided which is, depending on an axial relative movement between the holding device and the shaft , movable into a first locking position locked on the shaft , in which position the holding device is connected to the shaft in detachable and axially fixed manner by means of the locking element and thus assumes an axially secure working position, - wherein in the working position the at least one holding element assumes the holding position, - and wherein the holding device has an inner sleeve mounted on the shaft and an outer sleeve mounted on the inner sleeve , wherein the at least one locking element is radially arranged between the inner sleeve and the outer sleeve and/or the shaft and the outer sleeve , - characterized in that in a release position the inner sleeve and the outer sleeve are connected to one another in detachable and axially fixed manner by means of the locking element , wherein the inner sleeve is axially released relative to the shaft . - a shaft , having at one end a connecting section for connection to an output of the screwdriving tool and at the other end a driving section for driving a screw head , and - a holding device , mounted on the shaft and having at least one holding element , - wherein the holding device is configured such that the at least one holding element is, depending on an axial relative movement between the shaft and the holding device , radially movable relative to the driving section between a holding position, in which the screw head is axially held between the driving section and the holding element , and an opening position, in which the holding element axially releases the screw head , - wherein at least one locking element is provided which is, depending on an axial relative movement between the holding device and the shaft , movable into a first locking position locked on the shaft , in which position the holding device is connected to the shaft in detachable and axially fixed manner by means of the locking element and thus assumes an axially secure working position, - wherein in the working position the at least one holding element assumes the holding position, - and wherein the holding device has an inner sleeve mounted on the shaft and an outer sleeve mounted on the inner sleeve , wherein the at least one locking element is radially arranged between the inner sleeve and the outer sleeve and/or the shaft and the outer sleeve , - characterized in that in a release position the inner sleeve and the outer sleeve are connected to one another in detachable and axially fixed manner by means of the locking element , wherein the inner sleeve is axially released relative to the shaft . <EOS>