stainless steel meat grinder blade,mirror polish high forged processing and surface is more flat which meet with high speed Hammering and Heat treatment then machiningMaterials: 3Cr13, 51420, 420, 420S45 and SUS42012 Hardness: HRC50-55hole can reach 0.8mmUse in Meat grinder,Sausage packing machine,Meat mixer,Meat slicer,Meat cutting,Bone sawing machine etc.