... .45, 0.5 ,0.6 , 0.7, 0.8,1 module 3.OEM offered Plastic gears,1. Material: Alloy Steel, Carbon Steel ... and Tempering, High Frequency Quenching, Carburizing Quenching and so on.3. Surface Treatment: Galvanizing/Zincplating, Dacrotized, Black Anodic Treatment, Spray Printing ... , timely delivery and great customer service. We can provide small module gear: 0.25M 0.3M 0.4M 0.45M 0 ...