... to the customer's requirements. 1.Mod: M1, M1.5, M2, M2.5, M3, M4, M5, M6, M7, M8, M10. ... bronze, brass, chrome, 40Cr, 20CrMnTi, Steel 1020, Steel 1045. 5.Surface treatment: Carburizing, hardening and tempering, nitriding, high frequency treatment ... 22004040500-22005050500-22006060500-22007070500-22008080500-22009090500-2200100100 2.Non-standard type: Max length 2.3meters Produced as per your drawing ...