Made of either aluminized 16-gauge or 304 stainless steel to offer the benefit of using the same quality materials as most custom fabricators, this exhaust tubing comes in 4-ft sections (1/pkg). Use it straight, or bend it for your own ideal custom exhaust system. The 16-gauge tubing is seam welded in an exact manner to maintain O.D./I.D. size integrity, making mandrel bending easier. Each tube is packed to save on non-box and oversize fees. Made in the USA.