... life,high speed,high quality 3.NBR co steel small pinion gears with straight toothed, pinion and rack transmission gearWe can ... specializing in non-standard items. Feathure:1. Material: stainless steel steel alloy steel and brass etc2. Processing:forged,casting,heattreatment,or quenching ... , PC & QC. Material :carbon steel such as C45,20CrMnTi,40Cr,42CrMo or stainless steel or copper or nylon and so on ...