Borla 60728 ATAK Mid-Section-Connection Pipes Fits 21-24 F-150Exhaust Tail Pipe ATAK Mid Section Connection Pipes ATAK Mid Section Connection Pipes; Polyphonic Harmonizer; T 304 Stainless Steel; SPECIFICATIONS: WARNING CA Proposition 65: Yes WARNING CA Proposition 65 Message: WARNING: This product in the physical form it is sold does not present a hazard. However; operations including; but not limited to welding; brazing; or thermal cutting can expose you to chemicals including Chromium; Nickel; Cobalt; Arsenic;