1. Material: 65Mn or 60Si2Mn (Sup6), SUP9, 28SiMnB 2. Process: Forged 3. Heat treatment: Normalised-hardened & tempered 1. Material: 65Mn or 60Si2Mn (Sup6), SUP9, 28SiMnB 2. Process: Forged 3. Heat treatment: Normalised-hardened & tempered 4. Hardness: 40-50HRC 5. Working hours: 300-400 6. Features: durable , accurate size and smooth surface 7. Model: Howard, CELI, Sifang, Dongfeng, Kubota, Etc. ...