... steel, Plastic, POM, aluminium alloy, zn alloy, bronze, brass, chrome, 40Cr, 20CrMnTi, Steel 1020, Steel 1045. 5.Surface treatment: ... gear shaper, hobbing machine, grinder. Detailed Product Descriptionsteel gear rack Material : C45,40Cr,S.S 304,etc specs:10 ... 10mm length:1000mm Moudle:2-25 steel gear rack Steel gear rack specs: 10*10*1000mmMaterialC45Typespurteeth finishcutprecisionup 5Product usage ...