1.Material:aluminum 2.DIA:1-50mm 3.finish:oxidation 4.tolerance:+- ... 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 ... in electronics, lighting , home appliance, car, bike , computer, optical fiber products , medical equipment, mobile phone, Camera ,gas stove, gas heater, furniture ...