1.Material:aluminum 2.DIA:1-50mm 3.finish:oxidation 4.tolerance:+-0.01 Equipmentplaner type milling machine ,cnc milling machine ,milling machine ,drilling machine ,tapping maching,chamfering machine and so on .(details show in below sheet)Material aluminum, mild steel, stainless steel, chrome steel, cold rolled sheet, bearing steel, brass, copper, bronze, chrome copper, mold steel ,and so ...