exhaust pipe with many different kinds competitive price good looking ... "x12", 16" TOTAL(76x305, 407mm TOTAL)Construction: middle corrugated pipe with two extension tubesPlace of origin: China1)The main body ... layers bellow(0.3x2=0.6mm).3)Middle corrugated pipe has 25 rings.4)The extension pipes are the ... Aluminum steel pipe, each one is 51mm, two are 102mm.5) ...