Plastic gears, 1.Material:stainless steel, C45,POM,nylon 2.0.25, 0.3, 0.4, 0.45, 0.5 ,0.6 , 0.7, 0.8,1 module 3.OEM offered Plastic gears,1. Material: Alloy Steel, Carbon Steel, Stainless Steel, Hardended & Tempered Steel, Cast Iron, Aluminum, Copper, Brass and so on2. Heat Treatment: Hardening and Tempering, High Frequency Quenching, Carburizing Quenching and so on.3. Surface Treatment: ...