The Renyson Mixer Knives are made of boron Steel combining maximum wear resistance and bendability in case of excessive load in the mixer, allowing it to flex and return to its original shape. The advanced design on the edge “Ulta-Sharp” allows the mixer to cut the feed evenly without forcing the transmission equipment that may cause a bigger damage. During the manufacturing process every detail is important, beginning with the arrival of the steel, to make sure it complains with the specifications required, cut process, machining of the edge, and the most important the heat treatment process, to ensure the same mechanical properties in all blade body.