... 60*60mm. 4.Material: Mild steel, cast steel, cast iron, forged steel, stainless steel, alloy steel, Plastic, POM, aluminium alloy, ... zn alloy, bronze, brass, chrome, 40Cr, 20CrMnTi, Steel 1020, Steel 1045. 5.Surface treatment: Carburizing, hardening and tempering, ... *10mm length:1000mm Moudle:2-25 steel gear rack Steel gear rack specs: 10*10*1000mmMaterialC45Typespurteeth finishcutprecisionup 5Product ...