Abstract: Apparatus incorporated in a bending brake for making selective use of a preselected number of different dies which are to cooperate with reciprocating punches to make various bending operations. The dies are held in respective preassigned storage locations formed by a pair of racks jointly movable in the vertical direction. Disposed opposite to the rack pair of horizontal movement toward and away from same are a pair of die carriers which coact to carry a desired one of the dies out of the rack pair. A pair of die changer arms, pivotally mounted on the frame of the bending brake, transport a die to be replaced, which has been in use on a die bed, from the later on to the die carrier pair and, on their return stroke, transport the desired die which has been just carried out of the rack pair by the die carrier pair from the later on to the die bed.