... : Hardening and Tempering, High Frequency Quenching, Carburizing Quenching and so on.Standard: European or American standardItem: M1, M1.5, M2, M2 ... onExport Area: Europe, America and East AsiaOEM service: Make based on your special sample or drawing and meet your need for ... high precision on teeth of gear Good quality with reasonable price, timely delivery and ...