Low down time and high productivity. Optimum hardness for wear resistance. H13, M2, T1, D2, LD, 6CrW2Si(1.2550),... ... overall alloy tool steel bit , and may carry on the pre-protection and repair.Standard specifications-Machine way Tolerancescloser tolerances areavailablade upon requestsemi ... /16, 0.2/0.4 mm In order to serve and supply you better products,we sincerely hope that you could ...