Time Belt gear 1.Material: steel 2.MOQ: 100 pieces 3.Good quality and ... 's drawing or sample. Material: Mild steel, cast steel, cast iron, forged steel, stainless steel, alloy steel, plastic, nylon, POM, aluminium alloy, zn alloy ... , bronze, brass, chrome, 40Cr, 20CrMnTi, Steel 1020, Steel 1045. Module: ...