... steel,,alumium steel 3.no leakage Muffler / Silencer for any Car ModelWe have sizes :2kw,2.5kw,4kw,6kw,8kw,10kw ... etca) Auto muffler, automobile exhaust system componentb) Used to decrease engine noise and vibrationc) Exhaust unimpeded, small resistance, enough strength and ... drawings Welcome to contact us for more information! Muffler for Car Engine