Grader blade 5D9553 Material:High carbon steel or boron steel Hardness:HB260~320 or HB380~450 We specialized in manufacturing various grader blade for all brands of Motor grader, Bulldozers,Excavator,Loader and Scraper.A) Part No.: Grader blade 5D9553 B) Material: High carbon steel or boron steelC) Hardness: HB260~320 or HB380~450 D) For brands:Komatsu, ESCO, Fiat, Hyundai, Case, Sany etc.E) OEM: ...