DS DC gear spur gear for gearbox 1. Gear for industry and auto 2. Meet your need DS DC gear spur gear for gearboxFeatures:Material: Carbon steel such as C45, 20CrMnTi, 40Cr, 42CrMo or stainless steel or copper or nylon and so onProcess: Cutting, hobbing, lathe machining, grinding, broaching, thread rolling and so onHeat Treatment: Hardening and Tempering, High Frequency Quenching, Carburizing ...