Review on Enhance Your Exhaust System with Qiilu Tail Pipe Expander Set - 3Pcs Exhaust Pipes Muffler Spreader Kit by Kevin Bucher

This looks like a great product but as so often, looks can be deceiving. The flared splines that actually do their job are made of extremely poor quality steel. I used one of the three modules that came with it. It worked the first time. I put it back in the case and when I opened it again the two flared slots just snapped in half rendering it unusable.