A die changing apparatus comprising: a first die support for supporting a plurality of dies, the first die support having first and second die supporting portions (40, 42) which are spaced from one another, the die support being movable so that either the first die supporting portion or the second die supporting portion are locatable at a first transfer position; a transfer arrangement comprising a first grip portion configured to grip a die from one of the first and second die supporting portions when said one of the first and second die supporting portions is located at the first transfer position, and thereby remove said gripped die from the first die support; the transfer arrangement being movable, independently of the first die support, between a first configuration in which the first grip portion is configured to grip said die from said one of the first and second die supporting portions when said one of the first and second die supporting portions is located at the first transfer position, and a second configuration in which the first grip portion is configured to release said die and pass it to a second die support of a rivet setter located at a second transfer position; the die changing apparatus being characterized in that the transfer arrangement comprises a second grip portion, and wherein in the first configuration of the transfer arrangement the second grip portion is configured to grip a second die from the second die support of the rivet setter located at the second transfer position, and in the second configuration of the transfer arrangement the second grip portion is configured to release said second die and pass it to a disposal target. a first die support for supporting a plurality of dies, the first die support having first and second die supporting portions (40, 42) which are spaced from one another, the die support being movable so that either the first die supporting portion or the second die supporting portion are locatable at a first transfer position; a transfer arrangement comprising a first grip portion configured to grip a die from one of the first and second die supporting portions when said one of the first and second die supporting portions is located at the first transfer position, and thereby remove said gripped die from the first die support; the transfer arrangement being movable, independently of the first die support, between a first configuration in which the first grip portion is configured to grip said die from said one of the first and second die supporting portions when said one of the first and second die supporting portions is located at the first transfer position, and a second configuration in which the first grip portion is configured to release said die and pass it to a second die support of a rivet setter located at a second transfer position; the die changing apparatus being characterized in that the transfer arrangement comprises a second grip portion, and wherein in the first configuration of the transfer arrangement the second grip portion is configured to grip a second die from the second die support of the rivet setter located at the second transfer position, and in the second configuration of the transfer arrangement the second grip portion is configured to release said second die and pass it to a disposal target.