... :0.2--10 Outer diameter: 6-800mm Spur Gear Product Details:ShapeSpurPlace of Origin China (Mainland) ... Spur gear Standard: GB, JIS, ASTM and non-standard. Module: 0.2~10. Outer diameter: 6~800mm Material: Mild steel, cast steel ... , cast iron, forged steel, stainless steel, alloy steel, plasitc, POM, aluminium alloy, zn alloy, bronze, brass, chrome, 40Cr, 20CrMnTi, Steel 1020, Steel ...