Plastic gears, 1.Material:stainless steel, C45,POM,nylon 2.0.25, ... , 0.7, 0.8,1 module 3.OEM offered Plastic gears,1. Material: Alloy Steel, Carbon Steel, Stainless Steel, Hardended & Tempered ... 2M 2.5M 3M... Drawings According to the drawing production gears packaging Please contact us to get further information! thank you ...