1.material:steel,brass,alloy 2.modulus:2-30 3.heat treatment:Nitriding 4.teeth face finish:hobbing 5.standard:ASTM,BS tooth rack 1.material:steel,brass,alloy2.modulus:2-303.heat treatment:Nitriding4.teeth face finish:hobbing5.standard:ASTM,BSHow to order:We are metal gear, sprocket, gear rack manufacturer of customer order basis.we have so many kinds of this products, if you are interested in our ...