Motor grader Cutting edges and End bits:Material consist of high ... quality boron steel, also have two types Motor grader Cutting edges and End bits:Material consist of high carbon ... from 13mm to 60mm,width from 152 to 406mm.Cutting edges and End bits for Dozer :Material consist of ... .030.020.02 Material 30MnB Hardness HB460-500FOR DOZER CUTTING EDGES AND END BITSCMnSiCrTiBAlMoNiCuSP30MnB0.31.50.250.50.050 ...