9W2297 grader blade Material:High carbon steel or boron steel Hardness:HB280~320 or HB400~500 We specialized in manufacturing various grader blade for all brands of Motor grader, Bulldozers,Excavator,Loader and Scraper.A) Part No.: Grader blade 9W2297 B) Material: High carbon steel or boron steelC) Hardness:HB280~320 or HB400~500D) For brands: Komatsu, ESCO, Fiat, Hyundai, Case, Sany etc.E) OEM: ...