Abstract: Metal wire is descaled by passing it through a series of rollers which bends the wire and causes the scale to loosen and fall off. Two sets of rollers are positioned in planes 90.degree. to each other, through which the wire passes to bend it in different directions. The rollers are pivoted between a wire feed through position and a wire bending position, with the wire bending position being predetermined in relation to the diameter of the wire being descaled. A cam and follower arrangement is provided which upon movement of a center roller causes the breaker rollers to be positioned in the proper location for bending the size of wire being fed through the apparatus.