LM type series aluminous auto muffler,Mainly used in more bad ... Series Aluminous auto MufflerMaterial:Stainless SteelItem Code:LM-6,LM-8,LM-10,LM-15,LM-20,LM-25Thread Size:1/8",1/4",3/8 ... the same time, to reduce the noise is other function LM Type Series Aluminous auto Muffler