1.made with 9CrSi,D2,HSS, M2, 440b, 440c, etc 2.tolerance within 0.002mm 3. ... for metal plate, strip points production line, the cutting tool materials of high speed cutting tool steel material stability LD H13 SKD SKH and ... , XiGangPian and galvanized iron, stainless steel, and other high-speed cutting operations.Round the blade is article points a knife, the ...