Low down time and high productivity. Optimum hardness for wear resistance. Rods shear blade material:5CrNiMo,5CrW2Si,6CrW2Si,3Cr2W8V,4Cr5MoSiV1(H13)This series of shear blades which is developed by our company , the life is above 3-5 times of the overall alloy tool steel bit , and may carry on the pre-protection and repair.Certification we've gotton: ISO9001: 2008, SGSIn order to serve and supply ...